dont waste your time watching or reading anything if it isn't a
timing guide before you've made several maps, none of the information will stick in your head if you have no experience of your own
plus when you're new misunderstandings and poor advice can be really damaging, binging pishi's videos made my maps really boring when I was new so I'd actually recommend steering away from guides like that. context is everything, generalised guides are way less useful than actual feedback about a specific map