Videos can help to understand trading in better way but still making own practice and real trading teach lots thing. Own experience is always best teacher for everyone. Trading is really an art trader just have read things what charts are saying, and then have to conclude with own terminologies and techniques for trading with own practice and experience.
Basic explanation of trading : Buying at low price and selling at higher price of assets/commodity. Now this is the common aim behind trading but very few percentage of trader get successful due to lack of information, knowledge, experience and practice.