For me, as a rookie developer, I find I often have little to no clue what needs to be done until I've started coding and figured out through trial and error how to implement it and what the requirements even should have been up front.
That sort of exploratory work is really good because you’ll end up reading relevant documentation, then actually trying to use whatever it is you’re learning about. Often I’ll throw together a hacky version of what we’re aiming for, but ignore anything but the happy path. No error handling, no UI beyond the bare minimum, just the very core of what’s being done.
Easier said than done though