I've had my computer for 7-8 years now, and I just want to update it so I can actually enjoy playing my games when I'm not working. I know next to nothing about hardware, and would really appreciate help on what I should upgrade, what I should upgrade to, and where I can buy it (a PC picker list would help so much). The more specific and dumbed down the better, talk to me like I'm 10. My CPU is terrible that much I know, I also know upgrading my CPU would require getting a new motherboard.. is that hard to replace? I'd really love to stay around the 200$ range if that's possible, like I said I don't know hardware that well. I've provided my GPU and CPU, if you need any other specs please let me know.. and also tell me how I can find them haha.
I plan on gaming only, I play GTA V the most with mods, and other bigger slightly demanding games like Arma and Total War games (which my horrid CPU can't handle). I'm not looking for drop dread 4k graphics, just decent frames with decent graphics with a decent budget. No streaming or editing or anything but gaming and web browsing on this PC. Thank you guys so much, glad a place like this exists.
GPU: Nvidia GeForce GTX 960
CPU: AMD FX(tm)-4100 Quad-Core Processor
Motherboard: I'm not sure how to find out..