We can't answer questions if you don't ask any
Just get started. Install your current choice of linux on some spare hardware (looks like you have plenty).
Read the stuff on the 'net : http://google.com/linux
should be your top bookmark.
The LQ user OneBuck
has a load of newbie-friendly links in his Sig. Use the LQ Search button to locate one of his posts, read (and bookmark) his links.
Just searching LQ will answer most of your problems: At the top, select: Search
then click "advanced search" (it's easy
Just reading LQ (even if you do not, at first, understand the questions,) will help you learn a lot. [I read / problem-solved-with about 100 LQ posts before I was brave enough to post my first question here).
Get back here, with the details
, when you become stuck.
Welcome to LQ!