Well, I'm learning Korean and I'm having difficulties in distinguising some word. Can anyone help me?

I do'n know when to use 지만 and 는 데 because they both mean "but". And when do we use the structure Verb+을/ㄹ거예요? What is the different between it and Verb+을/ㄹ게요?

Please help me, I'm going crazy with it!!! :((

I am also learning Korean, but I am less advanced than you. Maybe this will help:

http://parksguide.blogspot.com/2008/09/conjunctions-but.html

Although this topic is old maybe you still need to know.

I can help anyone about korean~!!
because I'm korean zzz... but my english is not so good....
but I don' understand van's saying because I can't distinguish two languages... just....

wuaa...i wanna study that language....
is there anyone to teach me that lang?
thank you..

i also wanna study Korean . I want to go to Korea . Who do you live in Ha Noi? Where do you know to teach Korean?