i'll admit it's not as user friendly as windows. It's taking me a bit of time to learn how the linux system works. The most usuer friendly out there right now is Ubuntu Linux. My suggesstion would be to dual boot your system with Windows and Linux until you're comfy enough to let go of windows. I've split my hard drive right in half. 20Gigs for Windows, 20 for Linux.
Just google ubuntu linux and start researching. It's a lot of fun if you're a computer/tennis geek like myself.