I for one highly recommend discogs for tracking. Its pretty thorough, easy to use, and is a handy place to offload things you no longer want
https://www.amazon.com/Invest-Vinyl-Protective-Collection-Protection/dp/B01HHBA0PY
https://www.amazon.com/Sleeves-Vinyl-Provide-Collection-Protection/dp/B07CYJ5LFN
The InvestInVinyl are apparently good
https://www.amazon.com/Hudson-Hi-Fi-Sleeves-100-Inner/dp/B07FFCLNN7?th=1 the Hudsons are $79USD for 500 inner sleeves
https://www.amazon.com/Hudson-Hi-Fi-Record-Sleeves-Covers/dp/B07G2P3QKQ?th=1 $75USD for 500 outer