Is there sample data that I can use to learn how to use the software?

Absolutely. Sample data can be obtained by following the instructions below.

Step 1:  Click Here to download Loc8 Sample Data (675 MB) 

Step 2:  Click on Loc8 Sample Data.zip and unzip/expand the file

Step 3:  File structure will look like this depending on your operating system

Step 4: Open Loc8

Step 5: Click on the three dots next to the red arrow highlighted in the image below and select the 03 Output for the Results Folder: and 02 Sample Data > Single Grid_120 for the Mission Images:

References:  Loc8 Training Academy Video Series:  01 Setting up your Loc8 mission