I'd hit Gamefaqs mate, some great advice on the boards and they have FAQS too (shock!)
I tried and tried after playing Fallout 3, but just couldn't get past the random encounters and just dying in one hit from a group of super mutants, or dying from a group of rats, because 8 of them get to hit me before I can hit one of them back, then 7 of them hit me and I die.
It's a well loved game however and don't let me put you off, I'm sure I'll keep trying and maybe I'll get some advice here to help me enjoy it more too!