@Hoover185
Tower Support on 3DR website is a good place to start:
http://3drobotics.com/kb/tower-support/
Also, look in the Iris+ support section on their website and on youtube. You might find good stuff there. For example, here are some good videos on 3DR youtube channel that are for the Iris:
https://www.youtube.com/playlist?list=PLszd_sCs2VsKBJn4lwLxpK0NMhDVfZ-vB
Not all of those videos are related to Tower, but a few are and should be helpful. Just keep in mind that Tower used to be called "Droid Planner", so when you see references to that don't be thrown.
The "hardest" part is connecting to the Solo. On older 3DR drones (like the Iris), you connected using a MavLink antenna that plugged into your Android phone/tablet. That allowed your android to communicate directly with the drone.
For the Solo, you have to use wifi to connect. Basically, you join Sololink wifi network just as you would connect your Android device to any wifi network. Then, inside Tower > Settings you have to change the connection type to UDP.