Agreed with the controller. Get used to the keyboard and mouse over time. Trust us, you'll be thanking us later.
There are lots of parallel levelling up systems. Firstly you have your overall rank which goes from 1 to 145, but after reaching level 45 you stop unlocking anything more than dogtags. Rank levelling awards you with specialisations (sprint, frag, cover, suppress) and then squad specialisations (where the whole squad benefits from it). It also unlocks shotguns and PDWs that can be used on any class. All points when playing rank this up.
Then there is class levelling up with unlocks guns for that class, as well as equipment (like the m26 mass for medic, mines for engineer, claymores for support, and mav for recon). Only points earnt whilst playing the game (like for kills, ammo resupply, spotting etc.) go into ranking the class you are playing as up. When in vehicles the points go into ranking up the vehicle class you are in, much in the same way.
Finally gun attachments are unlocked purely by getting kills.
Typing in the chat is by default the following keys:
J: say to everyone
K: say to your team only
L: say to your squad only
There are no prestiges in BF3 or anything similar. But getting to rank 145 (or colonel 100) takes a long time.
Is your T's hardware name the same as your battlelog?