About being a tester

i am currently a student in CT, i was wondering since i have free time especially at night how one would go about being a tester. i love learning how to use new programs and i just recently heard stumbled on your website since i have a new computer and my windows keeps crashing i was thinking about installing fedora and seeing how it works. if you could get back to me about how i could become a tester i would appreciate it, Thanks a bunch, Francisco Ponce