I'm guessing that you mean careers in IT? There are endless career opportunities if you study IT. The Chartered Institute for IT is a good place to start looking, especially as they show you training and develoment opportunities from school age onwards.

You should have some qualifications in IT before you start looking for work, and a good grade in maths and at least one science is also desirable. Many employers also look for English qualifications as you are likely to need good communication and writing skills for many IT careers - for example, in IT support where you are in direct contact with customers.

Depending on your strengths you may go for website design, programming, networking or a number of admin roles. You can find a list of ideas for careers here, but I also suggest you put 'IT career' in a search engine and look at the links that come up - some of these lead you to job offers or training courses, as well as general information.