If you like to deal with electronics, replace broken parts or fix your mobile phone than there is a website that you should visit.
It’s www.ifixit.com, a great website which gives step by step explanations and photos for assembling and reassembling your electronics etc. You can also contribute by showing your fixing skills. There are even manuals for fixing Cars. The guides are all free, very easy to follow and of course up to date, you can also find a manual for the latest iPhone 4. 🙂 Enjoy.