Computers & Internet
Beyond The Black Stump
— a human-sorted information reference directory that's been up since 1995.
In the Beginning was the Command Line by Neal Stephenson
— download any book for free.
Monero Community Index
— list of links related to the Monero community.
Programming as if Performance Mattered
by James Hague
Programming in the Twenty-First Century — Full Archive of the Blog by James Hague
— a library of free e-books.
— bypass scientific paper paywalls, access any one you want.
— free public domain e-books.
The Pinouts Book
— reference PDF for different pinout functions in electronic projects.
— repository of e-books and textbooks.