It's my hobby to buy broken Apple products and refurbish them for reselling. I started a long time ago in junior high with my 1999 Lombard PowerBook G3 when iFixit.com was pbfixit.com! It's been a blast teaching myself through experience the Jedi ways of troubleshooting Apples. If one thing's for certain, it's that learning is constant.
I have been working as a circuit board technician and junior engineer R2Sonic, LLC since August 2010, and it's been an incredible educational process as well, particularly for repairing Apple circuit boards on the component level.
I believe we should all meet our challenges without trepidation and filled with excitement. That's what drives me, and I love that iFixit is a great place for us engineers and tinkerers to do just that.