I've found https://www.theodinproject.com/ really valuable. The resources they've gathered have a good balance of fundamental theory & practical exercises.
Memberstack is making authentication & payments easier for developers. We're growing fast (1,700+ paying business customers, $13M+ in revenue processed, 1M+ members authenticated) and are a team of seven full-time (3 engineers). We're now hiring slowly with funding from Y Combinator, Google, Village Global, and the Firebase co-founder. We're hiring our first payments-focused engineer help scale our payment processing from $10M to $100M+ and beyond.
Over the past year and a half, we just went through this — growing more than 10x from $60K ARR. Our focus has been building a sustainable work-life balance for ourselves and our team.
Happy to share learnings and just be there as a sounding board if you need it. Email in bio :)
Heya! We're building something for this exact use-case with Memberstack and are in Alpha. Want to drop me an email if you're interested? [email protected]