I dont know what to be

The good news about college is that it's four years long (or two, if you go to community). You don't need to decide everything immediately.

As for what to do, do you know about O*Net? http://www.onetonline.org/

It's run by (I believe) the Department of Labor. You can look up all sorts of occupations. Learn what's out there, and how well (salary, # of jobs, etc.) those people are employed.

How to get in college? I heard that some college might not accept you :/ and I'm not a really smart person anyway :/ I always get grade Ds and Es seem hard for me to get in any college

That makes it really tough. Our state community colleges would be required to accept you, but you would be required to take remedial classes. Possibly, when you get past that you will have more motivation and a better sense of direction.

If I don't pass my GCSE would I be able to get in college?

College is not for everyone.

There are plenty of fulfilling careers out there that don't require a degree.

But my parent wants me to go college then to uni :/ It better to finish uni so I can get a better job. But its rally hard for me cos I only learn English for like 3 /4 years.

Simple. Start looking into possible nearby Community Colleges and ask them about their GED programs. The admission requirements for community colleges are far less restrictive then regular 4 year colleges.

Many community colleges allow their students go fro GED and start basic college classes at the same time. If you serious about trying and making an effort and working really hard at your college work, taking these two years at community college, you can transfer to a four year college with a solid background of classes and possibly an Associates degree. At that point, for many four year colleges your dreaded high school past will be ignored. In fact making significant improvement at a community college from your high school years will look good on your part when you get to the four year college.

:s sorr, don't really know anything about college.... I guess I might have to speak to the tacher about it

The OP is talking about GCSE - that suggests s/he is not in the U.S.

The college to university process is quite different between countries. In Canada, for example, you can not easily move college credits to the university system.

It's probably best for the OP to talk to a counsellor at his/her school and then to discuss the results of that conversation with his/her parents.

Yes, I looked it up and GCSE is a public exam given in the United Kingdom.

Aha! That renders several answers meaningless.

It is good and you don't need to worry about. Just consult with your teacher and tell him your difficulty. He will give you instructions according to your college rules and regulation and tell you complete about courses and syllabus which you have to study. By this, it will help you further to study and able to pass exams.