Where should I start? Whats good and bad?
Punisher Max series written by Garth Ennis
buy the tpb volumes 1-10
He just got OWNED hard by Dakken.
I'd start with Marvel Knights 12 issue by Ennis and Dillion a.k.a Welcome Back Frank
Then Marvel Knights 37 issues by Ennis
Now you can go for the new ongoing which is in the Marvel U by Rick Remender. So far there are 10 issues with an Annual and The List One Shot or
Punisher Max 75 issues mostly by Ennis which has it's own continuity
All are great!
1-60 are Ennis, by the way.
Anything with Barracuda