Tab Bar Controllers are what you use to make this type of bar at the bottom of your screen so you can switch between multiple different screens and always have access to every other one.
After figuring out enough about these Tab Bar Controllers, I wondered how I could mesh them with the Navigation Controllers that I previously learned about. I tried many different methods, but kept getting various different errors. However, I eventually figured out the trick to it - I took the web of pages all embedded into the Tab Bar Controller, embedded the actual Tab Bar Controller into a Navigation Controller. This put all of the pages under the Tab Bar Controller under the control of the Navigation Controller, and therefore both controllers work at the same time.
While working without any instruction was interesting and probably added to my understanding of the controllers, it was much slower and more agonizing at times that I would like. In the future I will probably stick to following some tutorials, so I can keep my peace of mind and know in advance that I will be learning something worthwhile.
