i know most of them p for peon g for grunt l for lumber mill
Nice if you miss some of them you can actually know them easily by in game, every units or building are write in game, if you look closely you will see there always a letter in bright yellow colors wich mean it's the hotkey your lookin for.
Also, my best advice for you are this one's.
The best way to improved in this game is actually by this way.
Learn every hotkeys soon as possible.
Get yourself a good setting to play this game, it mean a good desktop, a good chair, a good mouse, a good keyboard, be confortable when you play, If your not confortable from start your gonna learn everything badly.
Take more times to watch ONLY pro players instead of losing your times with game who mean nothing.
Actually OLD GOW EF is the map you need to learn, dont waste your time on other map for now and dont waste your time with peoples who will play bad and learn you bad.
Try to know who are the best players, most of them have special icons in game like profi, sware, master, but it dont really mean they are all good.
If you join a game they will ban you most of time... Don try to lie or dont try to be invisible, just tell your new and you want to learn.
Keep asking your question in this thread, also if you see me in game dont be scare to talk at me.