Velma Said:

How do I write a cover letter?

We Answered:

Tips
A good cover letter should not sound like a re-hash of your resume. It should pull highlights from your resume and tie it gracefully with the job description. Consider it a bridge between your resume and the position you're seeking.
Make your cover letter visually appealing and coordinated with your resume. Use the same personal information block in the heading of your cover letter and your resume. A cohesive resume package is a very attractive selling point. If using paper (i.e., not online), use the same high quality paper for the cover letter as for your resume. At the same time, do not overdo the style elements. One type font is never wrong (unless you are in the arts).
Be concise. Never use two words when one will do (avoid verbosity).
The more unconventional the employer, the more leeway for creativity you have in writing a cover letter.
You don't have to explain everything. You may leave the employer wishing to learn more about you.
You should use a different cover letter for every job application. It must be specific to the exact role that you are applying for.
You should always request an interview.

Warnings
This is not your autobiography. Keep it well under a page.
Avoid generic, empty language ("I will bring a depth of experience," or, "I believe my qualifications and experience suit the demands of the position"). Be specific and concrete about what you can bring to the position.