Don't spend a lot of money right away. The industry changes constantly and what's considered the best today will be outdated in a year or two. Start with a mid-range option and you'll be happy.

Whatever you do, ignore the snobs. Every hobby has gatekeepers who act like you need expensive gear or 'correct' taste to belong. Forget them. Enjoy it your own way at your own pace. It's supposed to be fun.

Whatever you pick, the most important thing is that you actually enjoy it. There's no point owning the 'best' gear if you never use it. I've seen people get so caught up in specs that they forget to have fun with the hobby.

GameFAQs is a goldmine if this is about video games. Walkthroughs, reviews, message boards, the works. For music, check Allmusic.com — they have great write-ups and 'if you like X you'll like Y' recommendations.

Don't be afraid to buy used. eBay and Half.com have tons of stuff for a fraction of retail. Pawn shops too. I've gotten some of my favorite stuff secondhand. As long as it works, who cares if it's not brand new in the box?

Borrow before you buy. The library has way more than books — CDs, DVDs, even some equipment. Try things out for free first. No reason to drop a lot of money before you know whether you'll stick with it.