Its not really all that bad other than crazy drivers
1. Get mex insurance, those fuckers will bail you out of some shit
2. Use toll roads, they are made for tourists and you wont get into much trouble if you stay on them
3. Dont fuck with federales, they are kids with ,M-16's that dont find your jokes funny
4. If you get pulled over have your friend do the talking, once they hear someone who can actually communicate the cops tend to be far more realistic with you as far as punishment and fines. YOU ARENT IN AMERICA, THIS IS NOT THE TIME TO EXCERCISE YOUR RIGHT OR CALL OUT THE OPPRESIVE POLICE.
5. Treat everybody with respect and i dont think you will meet nicer people than those in Mexico
also, avoid rural areas and exploration, its really asking for trouble