1. Install the Locus Pro app
(don't start Locus just yet)
2. Install the File Manager HD app
3. Now play this video. Try full screen and YouTube app if on your tablet.
3. Then, as shown in the video(!) start Locus and get it to show the map and explore a bit. If needed, go outside to pick up satellites. With a brand new tablet it might take 30 minutes or more. You can do it!