Book binding is a moderately difficult skill or, alternatively, something you can pay an office supplies retail outlet to do for you.
I often have sheaves of loose paper I want to be in some sort of booklet form & the former is beyond me & the latter can be pricey.
I don't like the cheap, plastic booklets of clear plastic envelopes so, what to do?
Two, simple methods. If the papers are downloaded information eg Napoleonic uniforms etc, I use this method involving glue, gaff tape & a bulldog clip. It provides a surprisingly robust finished product.
I also have rule sets that need binding but these benefit from being able to sit flat on a table. That is, ring bound. The easiest way is to buy cheap A4 ring bind notebooks, costing less than $5 then trim & glue the pages of rules onto the existing pages.
I'm currently gluing my home grown Late Antiquity rules into one such note book that already (on the flip side) has a set of the free 'Valour & Fortitude' rules. I stick a cover for each rule set on front & "back" (now also a front). This is very useful for pdfs rule sets you've legally purchased & downloaded.
None of this may be new to you but I thought it might be useful.
donald