Does anyone know where I might find the most basic step by step instructions for using the Tower app? One would think that would be easy to find, but it is not. 3DR provides instructions that dance all around the core such as downloading the app, connecting, even doing a "follow me", but NOTHING about how to set up a basic mission - takeoff - go here - go there - come home - land. As if that's intuitive. The wiki is useless in this regard as well. Just BASIC instructions.
This is Agribotix' user manual for Tower, it is specifically about using Tower and Solo for orthomosaic "mapping flights," but it may be of use to you. Starting on page 8 is mission planning.