And in this computer, document everything you do.
Have a page where you list all the passwords you create - more people forget their passwords than you'd think possible.
If your computer has a habit of freezing or bombing, start a record of when it freezes - what were you doing just prior to freezing, etc. When asking for help, either on computer message boards, to me, or to someone at a computer store, this is the kind of stuff they'll need to know.
Also, if you create webpages - or are going to, in future, use this notebook to keep track of all your work.
You can never have too much information - as long as its sorted properly!