Viewing Books Offline

it goes like this:
1. make an archive.org account and install adobe digital editions
2. borrow the book for 14 days if the option's there or for 1 hour if it's not
3. get the urllink.acsm file that lets you view the pdf via adobe digital editions
3a. if you have a 14 day loan you will have a link to it in "download options"
3b. if you only have a 1 hour loan the link won't be there, but you can manually go to this url:
https://archive.org/services/loans/loan/?action=media_url&identifier=IDENTIFIER&format=pdf&redirect=1
replace IDENTIFIER with the id of your book, which you will find in the url of the book page. in your case it's chaosinwonderlan0000pick. the link will give you the acsm file (but you have to be logged in and have the book on loan)
4. open the acsm file in adobe digital editions and it will download a drm-locked pdf. it will only work inside adobe digital editions and only while the loan is active. you can do right click and show in explorer to see where it keeps the actual file, but it will have drm on it and won't open in normal programs
5. there are various ways to remove the drm, i use some python scripts i downloaded ages ago but they're kind of a mess. the easiest way seems to be to use the drm removal plugin for calibre, like so:
5a. install calibre if you don't have it yet
5b. download the newest dedrm plugin from https://github.com/noDRM/DeDRM_tools/releases and install per the readme
5c. drag and drop the drm-locked pdf into calibre and it will automatically remove the drm and add a normal pdf to your calibre library
6. you finally have a normal ducking pdf you can do whatever you want with. you can "return" the book now.

it's annoying to go through this the first time but once you figure it out you can download countless obscure books that can't be found anywhere else. people should download and undrm as much of this shit as they can in case archive.org ever goes down or switches to a better drm system.