Go to the "help" then click on "about...." That should tell you what version it is.

I remember that feeling of looking at the blank screen in LR and having no idea what to do. You must import images into LR. So click on the Library button (at the top), then in the lower left click "import." You'll then have to choose what files to import (choose a folder from the list in the left-hand box.)

When you select and image and switch to "Develop," you may or may not have possibilities available. If you look under the "view" button, you can choose what possibilities you want to see on the screen.

What I did in learning LR (without any outside help) I simply tried every preset to see what I liked. They are listed on the left-hand side in the develop module.) And I tried every slider (on the right-hand side) to see what it would do to an image. I'm far from an expert in LR, but I've learned what I like to do and eventually it gets easier.