Apologies.  I am new to this world.  I am the sole IT admin at a high school and we have a website using BigTree CMS.  The only thing I have done with it is to slightly alter text on web pages.

Some students have developed a web app we wanted to host on our website and until recently I thought BigTree did not support uploading files, or even using scripts or anything because all I can see is an overly simplified web-based wysiwyg type editor.  Where can I create new pages or simply upload a page that is already written in html?  Are there some kind of documents that might help me learn more about how this is set up?

I saw places mentioning "installing" BigTree.  Does this mean it can hosted locally?  Or is there a more robust editor where I can access the SQL database and use a cpanel style interface?

More importantly... if I were to "install" a local instance of BigTree, could content be uploaded to our website, which is currently cloud-hosted through BigTree (I cannot even sign in through BigTree, only by going to our_domain.org/admin can I access a sign in page to make edits or changes.

Under "Modules" all I see is options for:
- Content: Faculty, Events, Social Feed, and Alerts
- Blog: Posts, Authors, Categories
- Forms: Form Builder

Hopefully this information sticks out to someone and they can say something like, "Oh you must have a template already created and that is all you are able to access," or "There is an educational plan that has extremely limited features."  I feel comfortable around command lines and writing code, but for the life of me I cannot figure out how to do a single thing through the BigTree web editor besides make minor changes to pictures and texts.  Please help!