Cam timing worries
Look at the excellent photos and descriptions from Jason (Jason Abbott) and Ralf (Signit98) to see you how to do the job. Links to those sites are in this thread. If you look at those and are still nervous you might want to get some help. If you have some mechanical ability and look at those sites you will probably feel like you can do it. I have not done it yet either. It sounds like the cam chain tensioners are the bigger challenge as long as you mark everything first and secure anything that can be dropped.