I am impressed with your interest in your X5. The mechanical skills you learn now will serve you for the rest of your life. Go to
www.realoem.com to see individual parts and break away images to visualize how to do repairs. You can also buy repair CD's online;
http://cgi.ebay.com/ebaymotors/_Manu....c0.m245.l1318 Start getting your own tool collection and don't give up. Good luck