Top 10 tips
1. Tell the supervisor first
2. Give your two week notice
3. Dont insult the company
4. Organize your files for the next person
5. If required train your replacement
6. Dont steal from the company
7. Write your current employer a letter.
8. Stay positive toward your current job.
http://jobsearch.about.com/od/howtoquit/tp/quitting-your-job.htm
http://www.businessinsider.com/tips-for-quitting-your-job-2014-6
http://www.businessnewsdaily.com/6116-how-to-quit-your-job-without-burning-bridges.html