Remove the PDF preview of Mastering Monero
The actual free version is hosted on https://masteringmonero.com and the preview showed on https://getmonero.org has some mistakes, and is outdated. It does not reflect either the printed or digital version. I think we should remove it and instead of "Preview of Mastering Monero link" we should put a new link "Get your free PDF copy now".
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information