APA

Try Purdue OWL: Online Writing Lab. I find it very easy to use.

This is all you need: http://www.amazon.com/APA-Easy-Way-Updated-6th-ebook/dp/B004A14PWE/ref=sr_1_2?ie=UTF8&qid=1391047920&sr=8-2&keywords=APA+made+easy

Check your school's library. There should be pamphlets on the different citation methods (MLA, APA). Ask a librarian.

Unfortunately, I did not get any experience with APA in English 101 and 102. Does anyone have a recommendation on how to quickly learn it.

You got plenty of experience with MLA or the like I imagine. Same concept, find out the rules and follow them. The OWL is a good resource. An even better way is to use your APA handbook and learn by doing it.

Our school has a Writing Center which is staffed by students and grad students that are experts at all the rules. They will look it over and help you correct rule errors, but not rewrite your paper.

If you use Microsoft word, under the tab that says reference, you can manage your sources and generate bibliographies.

PERRLA is another option

Also, I think that there's no replacement for just a good old writer's guide.

I keep a document with my citations of all my textbooks and other often cited docs