Probably your not as good as you might think… but you can get better… going to the Akuma thread is a good step, but if you are having trouble understanding the info there, then maybe you are missing some basic knowledge about fighting games in general or SF4 in particular.
A good bet might be to start off by reading on on this topic
It covers mostly all of the lingo and notations you might need to know about fighting games…
After that it might be easier to understand the Akuma thread.
Also another good idea might be to ask more specific questions.
When you post and most importantly when you are playing.
When posting be very thourough on the info you give, mention what are you having trouble with specificly, is it a specific character, a specific move, a type of gameplay used by your oponent stuff like that.
When playing also ask yourself what are you doing wrong, maybe your jumping to much and getting anti-aired because of it, maybe your pressing to many buttons and getting punished from it, etc.
Also about the stick, it literally takes weeks if not months to get used to a stick, if your talking about doing hadokens and shoryus on stick is something but nailing the combos and more complex imputs consistently might be a tad more taxing to learn on a single afternoon, specially never having played on a stick before.
Last advice, be patiente you won’t a “pro” from night to day it take a while… and even then you might not be that amazing, it all depends on the amount of time you put on the game and in training to get better. Also read a lot, you will start to see that most of your doubts about the game(s) have allready been asked by other members before, and believe me its a lot easier to read something then posting a vague question and hoping that someone awnsers it and even better gets you the right awnser.