One thing that I've always found fascinating within Smash is how every player will improve at drastically different rates. I've seen people that have played the game for years and are still stuck at the level that they had always been at, and I've seen people explode onto the scene and start to win tournaments within months of starting to compete. Some people tend to think that some people that start winning rapidly like that were born with some natural talent to win. I think this couldn't be further from the truth. Nobody was born to play Smash, it doesn't work that way. The reason some people see rapid improvement is because they are better at learning. This ability to learn isn't innate, it is a learned skill itself.
Although teaching somebody how to learn is a very difficult, I've found many different books, articles, videos and more throughout my years competing that have personally helped me in my quest to becoming really good at Smash. I wanted to share with everyone a few of my favorite things that I have saved and watched or read countless times that have helped me immensely. I recommend going through these at your own pace and coming back to revisit some of the ideas as you've learned more and gotten better as a player. No matter how many times I come back to these, I feel like I've always gotten something new out of them. I hope that these help you as much as they have helped me.