Hello i have a old computer kicking about and want to start learning how to run a server and host a few of my small sites.But i dont no where to start and what is the min spec of computer i will need.Am not looking for anything fast its just to learn on.What will i need to to run a server and where can i get this stuff.
Please help.I will never host a smal site if any one helps but will run slow.

What server OS do you want to install? What webserver?

Have a look through this site.
http://www.dslwebserver.com/

i think i would be best with linux as it is a old computer it only has windows 98 on if just now and i also want to do this all for free if i can and as far as i no i mite be wrong linux is free.