It's always good to learn. We all do, albeit mostly through mistakes, not having gone to the effort of preparing ourselves adequately for the items in question.
It is always helpful to acquire a few higher grade items in your areas of interest as well as being cleanly and clearly struck. If correctly identified, then you can use those as a reference for the various design features you need to check to drill down into the sub-type. Don't be afraid of spending decent money on a good coin. It doesn't suddenly become a 50p lucky dip item worth nothing just because you paid more than you normally would.