Give everything a good read before really working. You don't need to remember everything, but you need to know what's there so you don't wind up reinventing wheels, endlessly googling with the wrong search terms, or doing things people who use the tool correctly find inscrutable. It's so important.
I will note that this is much easier to do well when you're a more experienced engineer than it is when you're just starting out, but getting used to doing it and going back over docs when you do have more experience is the best way to get used to it.
I think the main problem with this approach is the all-or-nothing problem. When reading official docs is not always clear when you already have everything that you need. Reading the whole doc is usually not a possibility considering most modern tools have easily 100+ pages that go down the rabbit hole.
In short, good official documentation is scarce and time to read is even more so.
Give everything a good read before really working. You don't need to remember everything, but you need to know what's there so you don't wind up reinventing wheels, endlessly googling with the wrong search terms, or doing things people who use the tool correctly find inscrutable. It's so important.
I will note that this is much easier to do well when you're a more experienced engineer than it is when you're just starting out, but getting used to doing it and going back over docs when you do have more experience is the best way to get used to it.