Those who are looking to gain a quick education or professional certification in almost any occupational field will want to look into trade schools (also called vocational schools). You can choose from literally thousands of community colleges, technical schools and online schools offering vocational training for certificates or undergraduate degrees to advance a career or gain entry into a college-level program.
A career change cover letter accompanies a CV. The cover letter is often the deciding factor as to whether the prospective employee is called in for an interview. It is not necessarily read until the candidate reaches a short list. Then it is vital to present a good career change cover letter, to prove writing and reporting skills. It is a good idea to personalize each cover letter for each employer, but if a worker is sending out many applications this is not always feasible. Instead, try to tailor each cover letter to a specific industry or field if using bulk postage for applications.
Are you currently unsatisfied with your job or the direction of your career? If you are, you may be interested in changing career fields. While this is more than possible to do, it is important to remember that not all jobs and career fields are the same. For example, just because you may make a great legal security, it doesn't necessarily mean that you are qualified to work as a nurse or another healthcare professional. That is just one of the many factors that you will want to take into consideration, before changing career fields. 
Attending a career college can help you land the job you've dreamed about. With so many options for schools and vocations, it's important that you do some research before deciding on a new career.