Sometimes, depending on the type of job you are applying for.
Always, unless the job advertisement explicitly says not to include a cover letter
Approximately 6 Paragraphs
1/4 - 1/3 of the page
Approximately 2 Paragraphs
1/2 - 3/4 of the page
1/2 - 2/3 of page
Print your cover letter on colorful paper
Name drop (if applicable)
Include a good opener to catch the hiring managers attention.
Show your uniqueness by telling the hiring manager a little more about yourself.
Goes behind your resume.
Is sent before you send your resume
Goes on top of your resume
Is sent after you send you resume