Aggression in NL Hold Em

[TheKingOfHearts]

Basically, I feel like I'm good enough at nl hold em to start playing a more aggressive style. The problem is, I feel like when I try to be aggressive and raise with more hands, I feel like I'm getting bullied out. Also, I need help with my continuation bets, as most of the time, they get raised as well. Any helpful articles or if there is a book about being aggressive, could someone point me in the right direction? thanks