This list is written in no particular order :)
This links to an interesting bootloader that offers more flexible theming and boot options (compared to Grub) and so it is pretty popular in the Linux ricing community.
This links to a product page for NVDIMM by Micron. NVDIMM stands for non-volatile dual in-line memory module which is like non-volatile system memory (pretty interesting).
This links to a product page on Unraid, a custom-built OS for storing and managing data (in RAID arrays).
This links to a comparison table of different init systems (including systemd).
This links to a youtube video explainign the difference between BIOS and UEFI.
This links to a youtube video that provides an analysis on the different types of NAND available.
This links to a blog post detaling migration form systemd to runit (and the background on why).
This links to a web calculator for different types of RAID and how it affects speed and reliability.
This links to a video explaining RAID 0, 1 and 10 which is more useful for consumers.
This links to a video in a series with video in number 9 that explains RAID 5 and RAID 6 which is more appealing to professional applications.