The Cathedral & the Bazaar
Eric S. Raymond
The Bogleheads' Guide to Retirement Planning
Taylor Larimore & Mel Lindauer & Richard A.Ferri & Laura F. Dogu
The Linux Philosophy for SysAdmins
David Both
Forge Your Future with Open Source
VM (Vicky) Brasseur
From Ruby to Elixir
Stephen Bussey
Polished Ruby Programming
Jeremy Evans
99 Bottles of OOP (Beer, Ruby)
Sandi Metz & Katrina Owen & TJ Stankus
99 Bottles of OOP (Milk, Ruby)
Programming Ruby 3.2
Noel Rappin & Dave Thomas
Programming Ruby 3.3
Dave Thomas & Noel Rappin