In addition to reading about Django, since that's what you use, I'd suggest finding a small bug to fix in the core project or a still-developing project in the

In addition to reading about Django, since that's what you use, I'd suggest finding a small bug to fix in the core project or a still-developing project in the ecosystem. It's a pretty mature project, so there's not a ton of low hanging fruit, but with new releases (like 4.1 that just dropped), there's always a few weird edge cases to fix. Claim the issue and ask for some help (after doing your homework), and I suspect you'll get helpful direction. That was my experience anyways. It will likely take some time to find something that looks interesting and solvable, but that's the best way to learn IMO so it's worth the grunt work.