I have been a Windows user since I was 14, and know a lot about it. Finally got a MacBook and will not go back to Windows ever. I am into Linux a lot but have been away from it for a while so im a bit rusty.
I started web development/design back when I was 15, basically just using WYSIWYG editors and now I find myself coding everything and (sometimes regrettably) not even looking at the product before uploading to a test server. I recently got into PHP and am trying to learn that. I know just about everything you can know about HTML and CSS.