How many hours a week are you going to learn and when? When you are at university or school, you usually know how many hours you are going to be in class or studying, and you stick to that schedule. Create a schedule for yourself that works best for you so you can stay on track. No matter how many coding certificates and workshops you complete, or how many programming languages you learn, the proof of your coding skills will be in your programming project. But there are also other people who are motivated to learn on their own without the mentality of "don't waste your money; study hard" but simply "it is possible to get a job in this field without spending 40k on school" or even "I like to learn programming as a hobby".
If you learn to read this documentation, it will be easier for you to learn how to use the different programming tools. It is possible that your interest in coding is more limited and you just want to learn enough Python to make your Raspberry Pi do interesting projects, for example. It's very unfair to say that those who didn't learn computer science at school didn't make the effort to learn the necessary subjects. Whether you're just learning to code or you're an old hand, experimentation is a fundamental part of it.
If you want to go pro and become a full-time developer, an intensive, in-person coding bootcamp might help, especially if you learn best in a structured environment with real people who motivate you. Having a community around you can also help you tremendously during your coding learning journey. Thanks to the tons and tons of open source code out there, you can learn almost anything by examining someone else's (flawless) work. This way, you can't just skip to the fun stuff; the site forces you to debug your code as you learn.
I myself had to learn through YouTube tutorials, and I'd love Codecademy to be as substantial, because the videos suck for learning. While you probably won't be able to create your own Star Wars BB-8 droid, you can learn how to code one with Sphero's BOLT. Three years ago I learned to code without attending a bootcamp or having a computer science degree.