APA Style is more than just citations--it includes guidelines on how you entire paper should be formatted! Here are some quick tutorials and resources for formatting a student paper in APA 7th edition style. (Note that for more formal assignments, like a thesis or dissertation, you should instead follow the formatting guidelines for Professional papers.)
The video below will show you how to format an APA 7th edition student paper using Microsoft Word. Scroll down for more recommended resources about formatting.
Zotero is free and open source software but requires a download to run (Windows, MacOS, or Linux). There is also a version for iOS (available in the Apple Store.) Link to it here: https://www.zotero.org/
Mendeley, owned by Elsevier, uses a Freemium model. You can create an account and use most features for free, but some may require that you subscribe to the "Premium" plan. Link to it here: https://mendeley.com
EndNote, owned by Clarivate, is a paid, downloaded software tool for citation management. You can purchase (at a discount) the full version from the UM Tech Shop. This is a one-time payment, not a subscription.