Considering a gaming PC

First, let me start off by saying that I am permanently disabled (I was in a car accident and am now stuck with a cane and do not have 100% use of my left hand/fingers). I spend a lot of time at home gaming on console but wanted to make the switch over to PC gaming. However, I do not have insightful knowledge into which parts are the best or which I may need... and it would be extremely difficult for me to assemble one (I am good at using computers and programs though). I am considering using a service like ncix. I have read the rules and know that we are not supposed to ask to be spoon fed builds and so I just wanted to ask if anyone knows where I could go for this? I appreciate the time you took to read this and if you could point me in the right direction. Thanks.