Just want to add some useful links:
-
http://aminet.net (no www. , nor .com): seminal! There you'll find almost anything you need to put your Amiga up-to-date. Programs, guides to make a lot of things in hardware and software, demos, shareware and freeware games, etc;
-
http://amiga.resource.cx : one of two Amiga hardware site to guide you thru hardwares you can buy (or not);
- a huge bunch of other sites. Start googling!
And welcome to Amiga.org!