it's super easy to get overwhelmed, so just try to focus on doing one thing at a time when ur new :) eventually ull feel comfortable enough to pull multiple stickers when ur on bar and sequence drinks (like steam milk for one drink, pull shots for another, make foam a third drink, etc etc etc) but when ur on bar, it really helps to only pull the stickers that ur about to work on! some partners will pull a ton of stickers out and put them on cups on the counter, but that gets really confusing and messy!
what i like to do too is to look at the top of the sticker where it says the number of drinks they got (it'll say like 1 of 2 or 4 or whatever it may be) and pull those out and group them together so i know who it's for and to do those together! ull find ur flow on bar :)

for pos, it's all about practice and eventually ull learn where everything is! u might pick it up really quickly or it make take some time for u to memorize, that's okay! ask for help whenever ur stuck, no one will mind helping u!

have fun and good luck :) <3