If you have been out of work for a period of time, it can be daunting knowing how to get back in to it. It may be that you feel you do not have the relevant experience or qualifications to go back in to a similar role you previously had any more or maybe that you did not enjoy it and want to look for something different.
If you are registered with your local Job Centre, they will be able to assist you with finding work in your area and that matches your skill set. They will even help you with interview techniques along with CV and cover letter writing. When I found myself out of work after having m two children, I decided I wanted to get back in to it. I met with the Job Centre and they offered me courses to go on to allow me to learn everything I needed to, to set up my own business.
If you are at school or college / uni then a careers advisor will also be able to discuss your job opportunities with you and lead you in the right direction.