Collecting resources for training development is an activity that I have pursued actively since I've started working in the field. But one resource is a little harder to find then others: icons! I have purchased sets and collected as many royalty-free icons as I could find, but as luck would have it, whenever I need a specific icon, I never seem to have it in my collection.
Well, if you have experienced the same problem, here is Mr.Icons to the rescue! With more than 125174 icons in more than 437 sets, the icon you need is available, for free!
Mr.Icons and browse through their extensive collection, you'll be glad you did.