Not a problem. I started out on Redhat but after a month I was not learning anything about Linux so I switched to Slackware. This bulletin board it full of friendly helpful people who will give you a hand if and when you switch.
If you wish to use Linux...whatever your reason...and you have no prior experience go for Mandrake, Redhat, etc.
But...if you have a desire to learn what an OS is and capable of...meaning how and why it works...check out Slackware or if you like it raw...try Gentoo.
Best of luck,