p1xt-guides VS learn-ruby-and-cs

p1xt: https://github.com/P1xt/p1xt-guides

Not sure if this exactly what you're asking but if you're wanting to try it out https://github.com/P1xt/p1xt-guides

For ideas on what to study next, you could take a look at my list of learning resources that I've been building up over these two years: https://github.com/fpsvogel/learn-ruby-and-cs

Here's a list of mostly Ruby and Rails learning resources that I've been building up, using it to keep track of my own learning path: https://github.com/fpsvogel/learn-ruby-and-cs. I hope it gives you some ideas!

Set goals. Identify one or two areas where you want to improve, and focus on those. For me it helps that I already have lots to choose from in my "Learning Ruby" list, which I've been building up for the past two years.

For lots more suggested resources, see this list which I've been keeping up since I started learning Ruby two years ago: https://github.com/fpsvogel/learn-ruby-and-cs

If you're starting from zero knowledge of Rails, I think the best starting point is the Rails for Beginners video series by GoRails. Then after that you can branch out to more specific tutorials (e.g. Stripe, like someone already mentioned), and at some point it'd be good to dive deeper into Ruby and Rails (here's a list of resources that I've made for that).

Rails for Beginners by GoRails is an amazing (and free!) way to learn the basics, but as a beginner myself I've found that a lot of the content on GoRails is a bit too advanced to be immediately useful. I've been keeping a list of resources that have been helpful to me, which may be useful to you: https://github.com/fpsvogel/learn-ruby-and-cs

Rails for Beginners by GoRails is a great intro that doesn't take long. From there, googling "rails + graphql" should get you the rest of the way. If you want to firm up your Ruby or Rails knowledge after that, see the resources I've listed at https://github.com/fpsvogel/learn-ruby-and-cs.

I've been compiling a list of resources ever since I started learning Ruby two years ago: https://github.com/fpsvogel/learn-ruby-and-cs. It's long but I try to include only resources that I really liked, or (in the case of to-do items) that look compelling.

Here's my roadmap that I keep up to date: https://github.com/fpsvogel/learn-ruby-and-cs. I started learning Ruby two years ago, and earlier this year I got my first dev job in Rails.

Here are a bunch of learning resources that I've been compiling into a list, which may be useful to you. They're not organized by concept like you propose, but for me the easiest way to learn was to do a tutorial/book or two, then build a project, then repeat. That way I learned the concepts without having to map them out, though I've made lots of notes on different concepts along the way.