Learning about electrical/electronics technology is a lifetime process.
New technology is being introduced all the time or you may want to work in an unfamiliar area.
"Another Mystery solved by John Anello:"
"I'm frequently asked how I can come to a shop and in just an hour or two solve problems that have eluded experienced technicians for days or even weeks. The key to my, or anyone's, success is to keep going to any training that's available. This makes it possible for you to understand the system that you're diagnosing so you can apply the logic that guides you to do the correct tests in the correct sequence. This leads to sucess.
Searching -- Selecting -- Evaluating
Keeping up with new information is very important, but it is just as important to verify any new information to ensure that it is valid. Maintain a healthy skepticism of anything written, displayed or spoken until you have confirmed it from other sources.