I wanted to know am I using the right Adobe for my online classes

1.  You have not identified which version(s) you are using, nor which versions your online classes require as a minimum.  If you can find these two things out then you should be able to tell by yourself whether or not you have what you need.

2. Adobe Reader and Flash Player are two separate programs.  If you need both then check the version requirements for both.

3.  Adobe Flash Player is going to be abandoned by most browsers fairly soon, meaning you will not be able to use it with a web browser unless you retain an older web browser.