- [ArchWiki](https://wiki.archlinux.org/) – Arch Linux Wiki which has really nice written articles valid for other distros.
- [ArchWiki](https://wiki.archlinux.org/) - Arch Linux Wiki which has really nice written articles valid for other distros.
- [Gentoo Wiki](https://wiki.gentoo.org/) - Gentoo Linux Wiki with a lot in-detail description of Linux components.
- [Awesome SysAdmin @ LibHunt](https://sysadmin.libhunt.com) - Your go-to SysAdmin Toolbox. Based on the list here.
- [Ops School](http://www.opsschool.org) - Comprehensive program that will help you learn to be an operations engineer.
- [Digital Ocean Tutorials](https://www.digitalocean.com/community/tutorials) - A surprisingly vast resource for getting the basics of certain applications, tools, or even systems administration topics.
- [Digital Ocean Tutorials](https://www.digitalocean.com/community/tutorials) - 6,000+ tutorials for getting the basics of certain applications/tools/systems administration topics.