Your posting history indicates a considerable LACK of knowledge. Please go to your nearest bookstore or coin shop and get a few guidebooks on United States coins. A good cherrypickers guide would also be helpful. Also essential if your interest continues toward errors, please become familiar with every aspect of coin manufacturing.
Doing this, with a little study, can help you become knowledgeable on the subject of coins.
Finally, STAY AWAY FROM YOUTUBE! Far too many videos are there to generate traffic, not to pass on knowledge. Internet traffic=advertising revenue. Once you demonstrate you are making honest attempts to learn, some here will refer you to specific videos that have good, accurate information.