There is a lot of bugs, also a lot of tweaks and apps aren't updated.

Alot of the Tweaks aren't working, but they're being updated everyday.

I love jailbreaks and if I was you, I would Jailbreak. It opens a new world of possibilities on your phone

Cubical wrote Alot of the Tweaks aren't working, but they're being updated everyday.

I love jailbreaks and if I was you, I would Jailbreak. It opens a new world of possibilities on your phone

I was also wondering if i can get add ons for games free like in game purchases to get coins/gems?

I have jailbroken my devices many times and its not as worse as most say it is when they are talking about the cons of jailbreaking. It is great for customizing your phone any way you want it. Although, it does void any warranty you may have on your device so beware if you break it.

PROS:
Open more options for customizing your device
More control over your device

CONS:
Can slow down your phone with lots of tweaks and such
VOIDS warranty

Yeah you can, that's in my top 5 fav tweaks! It works for most games too

If it messes up my device is there a way to undo the jailbreak?

If You Plan On Using It For Just Free Stuff ( Music , Apps etc. ) Then No

I haven't heard many positives, I'd wait for an official jailbreak.

Xynf wrote If it messes up my device is there a way to undo the jailbreak?

If the phone breaks or anything, just restore it through your computer. If they ask why it's restored (I don't see why they would) say because I was trying everything to get it to work
For the most part you can restore it in some way shape or form if worse comes to worse. You should be fine though, I have jailbroken many devices with out hassle.