Do you mean tutoring? If so only option is to contact the school and they will connect you with someone. Here is how to do by phone and email. I do not think email is an effective way to get tutoring. Here is a website that has videos. Khan Academy
To contact an instructor by email:
Go to the Help Center tab on your student portal and click "Find Answers/ Ask a question" button. Type the word “instructor” in the search box and press enter. You will see a few articles that may answer your question (we will be adding more as time goes on) but if they don't, click the Ask a Question link that appears on the black bar near the top of the page. This will allow you to Ask A Question and the question will be directed to your instructor as long as you select the Instructional support in the drop down department box on the email page.
To contact an instructor by phone:
Call toll free at your convenience by dialing 1.888.427.1000 Monday thru Friday from 9am-6pm ET. I am not sure where you are but this does not work for me because I would have to get up at 5 am to call.