If you'd like, I can give you a for a server, or help you troubleshoot a specific modpack if that ZIP file is giving you errors. Which direction should we go?

: The vanilla way to "write on paper" is by crafting a Book and Quill (1 Book, 1 Ink Sac, 1 Feather), allowing up to 100 pages of text.

: Go to Options > Resource Packs > Open Pack Folder and drop the ZIP file there.