If you click on the first of the Newbie links in my signature below, and use it to google

frequently used apps

you'll be on your way to some answers.

Please click also on the second Newbie link below. While the second link is, in form, tongue-and-cheek, the info is sincere.

For "theory" on my Newbie links, if you so desire, see this post, too.

Good luck!