How do I import a paper coper book into Roll20?

New GM and new to Roll20 here, and I'm not trying to re-buy Lost Mines of Phandelver. I researched a little and heard something about a "Transmogrifier" (don't know if I spelled that right,) but I'm not certain if that does what I'm looking for. Any advice?

Transmogrifier is a pro subscriber perk that lets you copy parts of one game into another.  If you have physical media you want to use on Roll20, you have some options: You could also play Theater of the Mind style and verbally describe the locations and characters.  You could create images of the maps (camera or scanner?) and upload them, then type in any of the content you want to provide in game. You could buy the module version from the marketplace. 

Unfortunately, most game publishers do not include digital copies of their books along with the paper copies. Also, digital versions of a product for one VTT (Like Roll20) don't usually work in a different VTT. (There are converters, but they are tedious to use and not always totally accurate). Can't blame the VTT's for this because they have no control over it.

I am guessing the maps of this specific adventure are not hard to acquire, scanner or camera, or even a basic google as this has been out for quite a while and you own the physical copy. I even think most of the monsters are from the compendium, so that won't be an issue either. The main thing will be the NPC's not in the Compendium, but setting up a token and manually doing rolls on occasion shouldn't be an issue. Really though, it is not about buying the book twice, it is about paying for others to do the work you do not want to. I have bought digital copies and even some physical copies of many adventures and books and then again here just so I do not have to put the effort in to setting them up. I will when I need to, but it is a lot easier to run when I do not have to. I have many issues with roll 20, paying for the AP's and modules I run here is not one of them. The lack of communication and development put into the PF2 Character creator. is.

This particular module is $14.99 on here, and I am pretty sure they have given it away multiple times as I have it in my collection and never bought it.