Onyx: Modern computers are easy to install — even for those who are technically challenged. Most come with easy to read “road maps” that show all the steps and connections. Once you get it hooked up, there are usually phone instructions where a tech will walk you through anything else.
You can also buy a good computer on line. I’ve bought many computers from Gateway over the past 20 years and installed all of them myself. I have a “consultant” who comes in for anything more complicated, such as navigating all my old files to the new machine.
Do not buy one online at the official HP site. They stole my credit card number and when on a shopping spree with it.