If you have played some of the past Forza's you can redeem a reward in which you get two cars and some cash. The amount of cash may very from one million to five million depending on what tier you are. All you have to do to redeem it is click on this link: [ Register or Signin to view external links. ]
Then sign in with your Xbox Live account and press rewards at the top of the page and then redeem rewards. Then you can go on your Forza 5 and go to the message center and there will be a message and just click A and there is some money to start you off.

Forza Motorsport 5 is a racing video game developed by Turn 10 Studios and published by Microsoft Studios for the Xbox One video game console. The game was released on November 22, 2013 as launch title. The game was revealed on May 21, 2013 during the Xbox One reveal event with a teaser trailer that showed an orange McLaren P1 racing against a silver McLaren F1. On August 15, 2013, Forza Motorsport 5 Limited Edition was announced, and will include multiple car packs and a VIP membership for the game. It features Jeremy Clarkson, James May, and Richard Hammond from BBC Top Gear for the game's commentary when choosing a new event, championship, or league.

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A very good way to earn XP within Forza 5 is to play rivals or free play. Rivals is very good because you can play different rivals within one race and you keep on racking up your XP and money. Free Play is a great way to earn XP also because you can set the track to Indianapolis raceway which is a oval then use a very good circuit car and turn all assists off and do around 10-20 laps or more and rack up a load of XP fast.

2010 Abarth 500 esseesse
2001 Acura Integra Type-R
2007 Alfa Romeo 8C Competizione
1965 Alfa Romeo Giulia Sprint GTA Stradale
1971 AMC Javelin-AMX
2013 Ariel Atom 500 V8
2006 Aston Martin #007 Aston Martin Racing DBR9
1964 Aston Martin DB5
2008 Aston Martin DBS
2010 Aston Martin One-77
2012 Aston Martin Vanquish
2012 Audi #1 Audi Sport Team Joest R18 e-tron quattro
2010 Audi R8 5.2 Coup FSI quattro
2010 Audi R8 Coup 5.2 FSI quattro
2013 Audi R8 Coup V10 plus 5.2 FSI quattro
2011 Audi RS 3 Sportback
2006 Audi RS 4
2011 Audi RS 5 Coup
2013 Audi RS 7
2013 Audi S4
1983 Audi Sport Quattro
2010 Audi TT RS Coup
2009 BMW #92 Rahal Letterman Racing M3 GT2
2011 BMW 1 Series M Coupe
1973 BMW 2002 Turbo
1981 BMW M1
1991 BMW M3
1997 BMW M3
2005 BMW M3
2008 BMW M3
2003 BMW M5
2012 BMW M5
2011 BMW X5 M
2011 BMW Z4 sDrive35is
2011 Bugatti Veyron Super Sport
1987 Buick Regal GNX
2011 Cadillac CTS-V Coupe
2013 Chevrolet #1 Andretti Autosport Dallara DW12
2013 Chevrolet #12 Team Penske Dallara DW12
2011 Chevrolet #4 Corvette Racing ZR1
2002 Chevrolet Camaro 35th Anniversary SS
1990 Chevrolet Camaro IROC-Z
1969 Chevrolet Camaro SS Coupe
1970 Chevrolet Camaro Z28
2012 Chevrolet Camaro ZL1
1970 Chevrolet Chevelle SS-454
1960 Chevrolet Corvette
1967 Chevrolet Corvette Stingray 427
2002 Chevrolet Corvette Z06
2009 Chevrolet Corvette ZR1
1970 Chevrolet Corvette ZR-1
1970 Chevrolet El Camino SS 454
1969 Chevrolet Nova SS 396
2012 Chrysler 300 SRT8
2011 Citroen DS3 Racing
2012 Dallara #28 Andretti Autosport DW12
2013 Dallara #9 Target Ganassi Dallara DW12
2012 Dodge Challenger SRT8 392
2012 Dodge Charger SRT8
2005 Dodge SRT4 ACR
1999 Dodge Viper GTS ACR
2008 Dodge Viper SRT10 ACR
1998 Eagle Talon TSi Turbo
1976 Ferrari #1 Scuderia 312T2
1998 Ferrari #12 Risi Competizione F333 SP
2011 Ferrari #62 Risi Competizione F458 Italia
1962 Ferrari 250 GTO
1957 Ferrari 250 Testa Rossa
2007 Ferrari 430 Scuderia
2010 Ferrari 458 Italia
1991 Ferrari 512 TR
2011 Ferrari 599 GTO
2008 Ferrari California
2003 Ferrari Challenge Stradale
2002 Ferrari Enzo Ferrari
2012 Ferrari F12berlinetta
1994 Ferrari F355 Berlinetta
1987 Ferrari F40
1995 Ferrari F50
1984 Ferrari GTO
2011 Ford #5 Ford Performance Racing FG Falcon
1992 Ford Escort RS Cosworth
2011 Ford F-150 SVT Raptor
2014 Ford Fiesta ST
2009 Ford Focus RS
2013 Ford Focus ST
2005 Ford Ford GT
1966 Ford GT40 MkII
1995 Ford Mustang Cobra R
1985 Ford RS200 Evolution
2007 Ford Shelby GT500
2013 Ford Shelby Mustang GT500
1993 Ford SVT Cobra R
2000 Ford SVT Cobra R
1991 GMC Syclone
2012 Hennessey Venom
2011 Holden #1 Toll Holden Racing Team Commodore VE
2011 Holden HSV GTS
2013 Honda #15 Rahal Letterman Lanigan Dallara DW12
2013 Honda #9 Target Chip Ganassi Dallara DW12
1997 Honda Civic Type R
2004 Honda Civic Type-R
2007 Honda Civic Type-R
1992 Honda NSX-R
2005 Honda NSX-R
2009 Honda S2000 CR
2013 Hyundai Genesis Coupe 3.8 Track
2012 Hyundai Veloster Turbo
2011 Infiniti IPL G Coupe
1961 Jaguar E-type S1
2012 Jaguar XKR-S
2009 Jeep Cherokee SRT8
2011 Kia Ceed
2011 Koenigsegg Agera
2012 Lamborghini Aventador LP700-4
1988 Lamborghini Countach LP5000 QV
1997 Lamborghini Diablo SV
2011 Lamborghini Gallardo LP570-4 Superleggera
1967 Lamborghini Miura P400
2010 Lamborghini Murcielago LP 670-4 SV
1982 Lancia 037 Stradale
1986 Lancia Delta S4
2012 Land Rover Range Rover Supercharged
2009 Lexus IS F
2010 Lexus LFA
2009 Lotus 2-Eleven
1971 Lotus Elan Sprint
2012 Lotus Exige S
2013 Lotus E21
2010 Maserati Gran Turismo S
1991 Mazda #55 787B
2010 Mazda Mazdaspeed 3
1994 Mazda MX-5 Miata
2013 Mazda MX-5 Miata
1997 Mazda RX-7
2011 Mazda RX-8 R3
1976 McLaren #11 Team McLaren M23
1993 McLaren F1
2011 McLaren MP4-12C
2013 McLaren P1
1990 Mercedes-Benz 190E 2.5-16 Evolution II
1954 Mercedes-Benz 300SL Gullwing Coupe
2012 Mercedes-Benz C63 AMG Black Series
2013 Mercedes-Benz G65 AMG
2012 Mercedes-Benz SLK55 AMG
2005 Mercedes-Benz SLR
2011 Mercedes-Benz SLS AMG
1970 Mercury Cougar Eliminator
2009 Mini Cooper John Cooper Works
1965 MINI Cooper S
1995 Mitsubishi Eclipse GSX
1999 Mitsubishi Lancer Evolution VI GSR
2004 Mitsubishi Lancer Evolution VIII MR
1994 Nissan 240SX SE
1970 Nissan Datsun 510
2003 Nissan Fairlady Z
2012 Nissan GT-R Black Edition
2000 Nissan Silvia Spec-R
1971 Nissan Skyline 2000GT-R
1993 Nissan Skyline GT-R V-Spec
1997 Nissan Skyline GT-R V-Spec
2010 Nissan370Z
1968 Oldsmobile Hurst/Olds 442
2012 Pagani Huayra
2009 Pagani Zonda Cinque Roadster
2009 Peugeot #9 Peugeot Sport Total 908
2011 Peugeot 308 GTI
1971 Plymouth Cuda 426 Hemi
1969 Pontiac Firebird Trans Am
1977 Pontiac Firebird Trans Am
1973 Pontiac Firebird Trans Am SD-455
1969 Pontiac GTO Judge
2010 Renault Megane RS 250
2003 Renault Sport Clio V6
1987 RUF CTR Yellowbird
1995 RUF CTR2
2011 RUF Rt 12 S
2004 Saleen S7
2012 Scion tC
1965 Shelby Cobra 427 S/C
1965 Shelby Cobra Daytona Coupe
2013 Subaru BRZ
1998 Subaru Impreza 22B STi
2004 Subaru Impreza WRX STi
2005 Subaru Impreza WRX STI
2011 Subaru WRX STI
1994 Toyota Celica GT-Four ST205
2003 Toyota Celica SS-I
2013 Toyota GT86
1995 Toyota MR2 GT
1985 Toyota Sprinter Trueno GT Apex
1998 Toyota Supra RZ
2005 TVR Sagaris
2012 Vauxhall Astra VXR
2013 Viper #91 SRT Motorsport GTS-R
2013 Viper GTS
1963 Volkswagen Beetle
1995 Volkswagen Corrado VR6
1992 Volkswagen Golf Gti 16v Mk2
2010 Volkswagen Golf R
2003 Volkswagen Golf R32
1984 Volkswagen Rabbit GTI
2011 Volkswagen Scirocco R

( because it says gives you these cars still means you have to buy them )

Day one edition car pack gives you these cars
2010 Audi TT RS Coupe
2013 Ford Focus ST
2011 Lamborghini Gallardo LP570-4 Superleggera

Limited edition car pack gives you these five cars
2011 Audi RS3 Sportback
2012 Aston Martin Vanquish
2013 Ford M Shelby Mustang GT500
2013 McLaren P1
2013 SRT Viper GTS

VIP car pack gives you these five cars
2011 Bugatti Veyron Super Sport
1991 Mazda #55 Team Mazdaspeed 787B
2011 Ford F150 SVT Raptor
1987 RUF CTR Yellowbird
1965 Shelby Cobra 427 S/C

LaFerrari car pack give you these ten cars
2013 LaFerrari
2013 BMW M6 Coupe
2011 Alfa Romeo Giulietta
2002 Acura RSX
2002 Lotus Esprit V8
1989 Toyota MR2 SC
1987 Ford Sierra Cosworth RS500
1987 Pontiac Trans Am GTA
1979 Chevrolet Camaro Z28
1969 Dodge Charger R/T

January IGN Car Pack
2013 Caterham Superlight R500
1961 Maserati Tipo 61 Birdcage
2013 Mercedes-Benz A45 AMG
1977 Ford Escort RS1800
1964 Chevrolet Impala SS 409
2002 Ferrari 575M Maranello
2008 Lamborghini Reventn
1957 Ferrari 250 California
1969 Nissan Fairlady Z 432
1984 Peugeot 205 T16

"Should I buy season pass ?"
Yes Forza has lots of DLC's and they can be costly so I recommend you do buy the season pass.
"Why do I randomly get disconnected from a race ?"
It's just Forza itself lagging not you just restart you Xbox One.
"What assists should I use ?"
I would recommend using none of them except for using normal steering and cosmetic damage, this is all changeable upon your skill level, for a person like me who has played every Forza it's not difficult so try to find what you are comfortable using.

Bernese Alps (Switzerland)
Circuit de Spa-Francorchamps (Belgium)
Indianapolis Motor Speedway (Indiana, USA)
Le Mans - Circuit de la Sarthe (France)
Mazda Raceway Laguna Seca (California, USA)
Mount Panorama Bathurst (Australia)
Nurburgring Motorsports Complex (Germany)
Prague (Prague, Czech Republic)
Sebring International Raceway (USA)
Silverstone Circuit (England)
TopGear Test Track (Dunsfold, England)
Yas Marina Circuit (Abu Dhabi)
Airfield Test Track

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TheSLAPTrain1 for letting me use your video.
Arekkz Gaming for letting me use your video as well.
Arouzd for helping me with the post and some of the info.