I am a internet/computer security enthusiast, and am always eager to learn (when I have time). Though I haven't had much formal computer training, I know a fair amount by friends and my own explorations.
Occasionally, I explore the world of programming. But since I have other means of earning money, I often get side-tracked.
Writing about my favorite subject, computer security, is fun for me (except when I'm behind and hurrying to catch up).
I have reviewed security programs in my blog/space/website. Participating in Comodo's Forums also helped me learn more about computers.
In addition, I have some knowledgable friends who have taught me many things.
If you spend a lot of time doing something, you are sure to get better at it, and I have browsed, tweaked, tested, and explored this subject for hours on end.