Gather copies of all your academic records. Make sure you have copies from all colleges or technical schools you've attended as well as copies of any degrees you've earned. You will need them when applying for any online positions.
Gather records of any academic awards or experience you've attained since you graduated. For example, if you are a master gardener, make sure you have copies of your certification to submit when applying for a job.
Contact online colleges. An online university website may list open positions. Submit a cover letter, your resume and any other documents required by the college for employment. Also, check of openings at AdjunctProfessorOnline.com.
Contact brick-and-mortar institutions. Many traditional colleges offer online classes in addition to on-site instruction. Contact the head of the department for your area of expertise and ask about job openings. You may be asked to come in person and demonstrate your teaching methods.
Advertise your own services. Take out an online advertisement on an Internet bulletin board such as Craig's List. Indicate your background, the hours you are available and the fees you charge. Set up a webcam and email address specifically devoted to the class so that students can reach you more easily.