Did someone say PC MASTER RACE.
On a serious note, PC gaming is pretty much better in every way so I'm glad you've gained some interest.
Generally, I've made more lasting friendships and had more fun on PC back from when I played on console. Before I swapped to PC gaming, I had pretty much been an Xbox fanboy and bought tonnes of games. Games back then were good for their time and I found that a lot of console players simply had no idea what is possible with PC gaming - I always associated it with the spotty, nerdy teenagers playing World of Warcraft for 23 hours of their day.
The main thing is that PC opens up possibilities whereas consoles are very closed-market. Microsoft is getting better at opening up because they've realised PC gaming is a HUGE market. It helps because they obviously make Windows and so can easily utilise their platform specifically whereas it would be more difficult for a company like Sony or Nintendo to get on par with what Microsoft can achieve.
A key example of this 'freedom' is something as simple as choosing how you want to play. Do you want to play with a controller still as it's familiar to you? Go ahead...
Want to play with a mouse and keyboard? Sounds good to me.
Want to play with a banana and a potato hooked up to some tiny computer system? Why the **** not?!
This is a primary factor for me because whilst mouse and keyboard are going to be better for precise aiming in FPS games; you will find a controller, or steering wheel, better for driving games. I find controller better for platform and fighting games so I use my Xbox 360 controller instead.
Do you want to talk to someone on Skype? Discord? Teamspeak? It's entirely up to you in how you want to play, talk, work, etc.
This translates across into games themselves where you can, usually, customise a lot of video, audio and game settings to play exactly how you want to. Some games aren't very good ports to PC and lack a lot of features, such as changing Field of View, rebinding keys, etc. but in general it's pretty normal to be able to do this.
PC gaming also has a large platform to improve games with mods or other addons. If you've heard of Steam, you may know they host a large modding community platform known as Steam Workshop. You can subscribe to an addon for a workshop-compatible game to completely overhaul the game you once knew. Skyrim is a popular example of this - Bethesda even took this system to console by adding 'sanctioned mods' which can be used on console platforms.
Now, getting into PC gaming is difficult because it's an entirely new system where you would have to buy new games, find new friends, etc. but it is honestly worth it. I don't regret moving to PC at all.
In terms of buying a gaming pc, your best bang-for-your-buck is to build your own PC. This can sound incredibly daunting for someone who doesn't know what a 'motherboard' even is but there are tonnes of online tutorials and information to help you do it.
Your budget will be a big factor of where you start - PC gaming is more expensive to start than console gaming but you save hundreds, if not thousands, of money over time.
If you are interested in building your own PC, head to the PC Building section on TTG and someone will be happy to help.
Edit: If you are an Xbox gamer, it may be worth looking into getting the Xbox Game Pass because you can get quite a lot of games that are 'Xbox Play Anywhere' and some of them are even crossplay compatible such as Sea of Thieves.