Ape Apps

Hi!
I apologise if this is too incredibly silly of a question, but is there a more efficient navigation screen than the default, which doesn't seem to allow for customary navigation. I feel kinda silly asking, but is there an easy way to rapidly move between folders? For instance, I cannot locate simple tools like a Back button, or Parent Folder selection. If this information is locatable within a user manual of some sort, please point me to it and accept my apologies.

Thanks!