PC Building. PC Building never changes...

After years of research and hesitation, I finally bit the bullet and purchased my first build gear. Intended to replace my 2020 HP desktop workhorse (home office/school machine) with increased processing power, memory, and storage, I built a machine that I can play most of my favorite pc and console games on. It's not an over the top super machine, but I can play the Fallout series with no issues! I'm still new to this, and have plenty to learn. But I will likely add a dedicated GPU soon to help game on highest settings. I think for my next build, I would probably take a step down on the CPU, and put a little more into graphics performance. Starfield is coming!!
After all of the horror stories I have heard about first time builders ruining motherboards or processors due to common mistakes, I was absolutely petrified when I first pressed the power button on my brand new custom built PC, and not a single light or fan powered on. After triple checking every connection and wire I could find, my wife was kind enough to point out that I hadn't switched on the PSU. I felt like a complete doofus!
Additional parts that aren't listed in the build list are
1: ROG Strix LC II 240 (White)
2: WD Black 1Tb M.2 NVMe Gen 4
3: 1 Fallout 3 Vault-Tec replica bobblehead