This is totally the spirit of Zed Shaw’s Learn Code The Hard Way books. They cut through the fallacy that you can become an expert developer by watching video clips for a month. They make you type every line of code, one-by-one, over and over again until you learn how and why things work.
Nobody expects to master guitar in 30 days. It takes practice, persistence, repetition and want-to. If you’re willing to put in the work and you actually enjoy the process, you’ll get there!