The app is very easy to use.
Here is an 11 minute video that covers everything you need to know. The first 3 minutes show the basic app functions, and the last 8 go in to full detail:
This article shows you how to access the App: https://marksetbot.zendesk.com/knowledge/articles/115001382833/en-us?brand_id=114094438773
RECOMMENDATION: If it is your first time using the MSB, setup the MarkSetBot deck on land using a table or something similar. It is ideal to do it outside so that you get a GPS lock. Make sure the motor head and prop are free to spin. You will be able to test all the functions of the app without the risk of running in to things.
If you are looking for a recommendation on waterproof devices, we have found two that work when soaking wet. Most waterproof phones and tablets don't work well when soaking wet (the screen jumps around). These devices allow you to switch to a pen/stylus when it is raining.
Samsung Galaxy Tab Active PRO 10.1" | 64GB & LTE (UNLOCKED) Water-Resistant Rugged Tablet, Black – SM-T547UZKAXAA
Samsung Galaxy Tab Active 2 8.0" 16GB, 3GB RAM (WiFi + Cellular) SM-T395, IP68 Water Resistant, 4G LTE Tablet & Phone GSM Unlocked
We have seen an issue with 8.0" version taking on water when it is soaking wet. If you have the budget, we recommend the 10.1" over the 8.0"