if you are just starting i suggest some of the easy perks that after about 300 kills with them you get 10k xp which is great.
Favorite Gun-Scar-l
Favorite Secondary- the first machine pistol
Favorite Attachment- None, or silencer
Favorite Cammo- Hex
Best Map- Dome
Point Streak Kit- the second one
Point Streak(s) or Perk(s)- uav, stealth bomber, emp.
3 Best Perks- sleight of hand, quickdraw, anything
Favorite Game Mode- demolition. you can get a lot of kills and get a lot of match bonus and objective bonuses.

Next time you have double XP save it til the higher ranks otherwise you'll be wasting coz that is easy enough to rank up :russianroulette: :russianroulette: :russianroulette: :russianroulette: :russianroulette: :russianroulette:

Favorite Gun- CM9110
Favorite Secondary-First machin pistol w/akimbo
Favorite Attachment-?
Favorite Cammo- Snak & gold
Best Map- Underground
Point Streak Kit-
Point Streak(s) or Perk(s)-
3 Best Perks- SoH(PRO)-Quickdraw-not sure
Favorite Game Mode- Ground war,Domation,SnD,

Im_Jordan_M wrote Next time you have double XP save it til the higher ranks otherwise you'll be wasting coz that is easy enough to rank up :russianroulette: :russianroulette: :russianroulette: :russianroulette: :russianroulette: :russianroulette:

Technically, you're still gaining the same amount of XP at a lower level than at a higher level.