A cover letter is a concise and powerful way to show how your skills align with what the company needs. In writing a cover letter, make sure you focus first on what the company needs and work backward from there to establish fit. 

I have created a Google Form for you to fill out to structure your own cover letter: How to write your Cover Letter.  Please click on copy and paste (once you hit submit, the text will be gone.)

I have created a video to show you how to write this cover letter in further details.

Here is an example of a Cover Letter applying for a Research Analyst at CEB

Here is an example of a Cover Letter for a Management Trainee Position