The simplest thing I can offer is that you cannot learn mathematics by reading, watching, or hearing about it - you have to do it yourself. The way most people

The simplest thing I can offer is that you cannot learn mathematics by reading, watching, or hearing about it - you have to do it yourself. The way most people run into trouble is by skipping over new concepts quickly thinking “I get that”, and then ending up in a real muddle with a later concept that builds on it. There are better books and lectures and weaker ones, but none are a replacement for working problems.