This is my first PC! The case is easy to work in with ample space for stuffing unneeded cables, so this is a great start for beginners. I got my motherboard at Microcenter and it had the "Ryzen 3000 Compatible" sticker on it, but I can't say the same for buying it off of amazon, so be wary that you may have to perform a BIOS update if you get it online. Pretty much any dual-channel RAM, any SATA SSD, and any >300W 80+ Bronze PSU will work in this build, so look around for different parts, as the prices for parts in this list may fluctuate. Thermal performance is great because the included case fan's diameter is almost 3/4 the width of the case itself and flexes the case's great airflow, all while staying close to silent most of the time at a stock fan curve. (However, I didn't measure the thermals, but it's probably fine) TL;DR this build is for someone who doesn't want to worry about the nitty-gritty parts of PC building. The components are all plug-and-play and the case is forgiving.
This case is very easy to work in, has a huge included fan and has very open sides for great airflow, all for a great price. A great case for a small-form-factor PC.