trust me you won't regret it!
ok so i might post a wall of text here to give you a quick crash course on computer parts. you can build along with this handy dandy online tool
https://pcpartpicker.com/
CPU - small lil chip that's the brains of your system. generally the more cores you have, the better it'll be able to handle computations and rendering. this is arguable though, so you should do your research there.
Recommendations: AMD Ryzen 3 3100 / Ryzen 5 3600 / Ryzen 5 5600X
Motherboard - big techy board that holds all your components together to make sure they all communicate and coordinate with each other. you're gonna wanna match the motherboard socket with the processor you got. (for AMD processors, usually it'll be AM4 or a variation of that, if Intel, generally they'll be LGA 20-something. just search motherboard sockets bcs it's hard to boil it all down here lol) comes in large size (ATX), slightly smaller (mATX), or micro size for those who want super smol builds (ITX). generally mATX is the most reasonably priced while still having all the necessary features, so i almost always go for that.
Recommendations: MSI B550M Bazooka / Asus B550M-A / Asrock B550M Steel Legend
RAM - how much you have determines how many programs your PC can run at once before dying (also depends on how heavy the programs are). pretty straightforward on this one, just make sure it's DDR4 and has a fast speed (at least 3000MHz for Ryzen systems. you'll figure out what this means with more research huehue). and generally, a set with 2 sticks is always better than just one, since it can make use of Dual Channel mode on the motherboard.
Recommendations: Corsair LPX 16GB DDR4-3200 Dual
Storage - your hard drives and SSDs. the place to store all your downloaded and installed files. i believe you know this stuff so i won't dwell into this. SSDs are faster at opening & closing files or programs installed on them, so generally it's best to use these to install Windows on so you won't have to wait forever for your PC to boot/shut down. i recommend NVMe since they install straight on your motherboard and it eliminates some wires on your build (less cable management to have to deal with in the end).
Recommendations: Western Digital Blue SN550 250GB or 500GB NVMe SSD for your OS and games/apps you constantly play/use / Seagate Barracuda 1 or 2TB HDD to store all your miscellaneous files
Graphics Card - whether it be called video card, gpu, graphics card, etc. it's the same thing; the thingamajig that powers everything you see on your screen! these guys can range from being very weak (integrated graphics cards on CPUs that can only handle light browsing and basic apps) to ultra strong (Nvidia's RTX 3090, the best of the best there is at the moment wherein it can run the most demanding games on ultra at 4k HD resolution without a sweat!). AMD and Nvidia are neck-and-neck in this market rn, thus competition is high and it's a good time to buy :D
Recommendations: Nvidia GTX 1660 Super / AMD Radeon RX 5600XT (for 1080p gaming. if you have a higher res on your monitor, hmu)
Power Supply (PSU) - the thing that brings power to your whole system. this is where any expert will tell you NEVER to skimp out on. if you get something shoddy and it fails, more often than not it'll bring down other components with it, making it all one big expensive mess. generally you'll want to look at how much wattage your PC is gonna be consuming, then get something with at least an 80 plus bronze rating to match that with a bit of leeway (e.g. if your pc uses 250W, it's a good idea to go up maybe 500W or so just in case there's spikes in energy consumption every now and then. you'll want the PSU to be able to handle that without shutting your computer down.
Recommendations: Anything 80+ Bronze/Gold from Corsair, Seasonic, Silverstone, EVGA, Thermaltake, Cooler Master, etc. this guide is super helpful
https://linustechtips.com/topic/1116640-psucultists-psu-tier-list/
Case / Chassis - holds everything in your build. imo the most unimportant part, yet still quite important if you value air flow, low temperatures, aesthetic, & ease of building and cable management of your system. RGB and glass side panels are all the rage these days, thus it's pretty much the only thing companies anymore. just make sure to be careful when handling the glass panel bcs those things break far too easily.
Recommendations: Phanteks Eclipse P300A Mesh, Fractal Design Meshify C, Corsair 275R Airflow (i only ever recommend mesh cases because air flows through them the best!)
for anything else, I recommend taking a dive down reddit, or linus tech tips, or tomshardware, and see for yourself just how deep this rabbit hole goes. good luck!