This is how to add your Movie collection to PLEX. First goto the following url: http://127.0.0.1:32400/web/index.html where you should see the following:
Click on the + symbol as indicated above and you should see the following:
Click on the Movies icon above and you will see something like this:
Click on the Add Folder button above and you will be presented with the following:
Now you can either (1) type the complete path to the folder that contains your movies or (2) click Browse Folders instead. We will go with Browse Folders when clicked you will have the following:
Now double click on the location that contains the movies and keep double clicking until your in the root of the folder that contains the movies and click on the Add button.
After Save is pressed you will have something similar to this:
Note the circled bit at lower right of page, this lets you know your Movies are being processed and depending on how large your collection is it can take a log time to process them all.
Thats it you have now added your Movie collection to PLEX.