Amiga 1000 system  -- The first Amiga

What can I do with an Amiga 1000 computer?
The 1000 is probably the only Amiga that is truly obsolete. Unexpended you can run only the oldest software, and for the most part, you won't be able to upgrade it.  Don't plan on using this as your primary Amiga. I don't recommend buying this even as an entry to the Amiga. Any expansion solutions will be hard to find. About 5 years ago, a company in Australia designed a motherboard replacement for the A1000 called the Phoenix board, if you can get your hands on one of these, you'll have A3000 level performance, but not much else - and expansion again is almost nil.

Can the A1000 family run modern software?
No. Unless you have an expanded model (RARE) then most new software will not run on this Amiga.  

Can I connect it to the Internet?
Yes, but not easily and it will run very slow. You will need some essentials though. First off, it's imperative to have a hard drive and a good amount of RAM. With the 68000 CPU as stock, you'll be limited in what types of applications you can run. FTP, IRC, E-Mail, and Telnet. I doubt you will get a graphical Webbrowser to work. I suggest if your main goal is to get on the net, to go for a more powerful / expandable Amiga.

How do I expand it?
The Amiga 1000 does not have as many upgrade options as the other Amigas. The expansion slot (Zorro I), on the right side of the box used to have many expansion products made for it, however these may be close to impossible to find. On the bright side the chips on the motherboard are almost all socketed, this allows great flexibility, and there have been many options that take advantage of that. There are not any open drive bays for CD-ROM's or extra floppy drives. The front door expansion bay was made primarily for memory expansion, though there have been other products for this too.