Help me in setup my server at home

I need to have some help if not even do it for me. I have a Dsl connection in my home. I have upgraded to a faster connection. so I want to trun my computer into the server. So you are either going to tell me step by step or do it for me. this should be easy. Linux server with all the downloadable features that are still free for this use. I will need to have a a mail server with this. Payment upon completion not before. Thanks