Sometimes knowing a little can get you into big trouble. We have all done it. We start what seems like a small job, like plumbing, and have it turn out to be a major issue --the kind of problem that makes you wish you had called the plumber in the first place.
Not long ago, I received a plea for help from an owner of a Mini Cooper via a comment on the BA Auto Care blog. The Mini owner was having an issue with 1st gear. He would select 1st gear, release the clutch, and nothing would happen. He got advice from two friends who were mechanics, talked to a local dealership technician, and did some online research -- lots of advice from lots of resources.