Well it's certainly confusing if you don't have the grounding.
Back in the mid 90's I gave my father a computer and spent time teaching him how to use it. Being an ex Air Force electrician, he attended all these lessons with his notebook and pen. He still does. But many of my lessons were in DOS and Windows3.0 which was a very different animal to what we use today.
Now my father tends to call me for advice on options and to discuss what he thinks is going on when he can't quite work it out.
The last time my father rebuilt the desktop, we discussed what he needed for a few months, created a shopping list and he bought the parts. I gave him a CD and a key and off he went. Before he began my mother said "Do you think he can do this?" Mainly because my Brother is so negative about him. I said "Yes of course he's more than capable and we've discussed everything he needs to do".
I asked my mother, later, how it had gone. She said "it was the easiest upgrade yet".
When my Brother donated some hardware for my Father to upgrade again, it was not such a smooth upgrade. Mainly because my Brother kept trying to force my father to do what my Brother wanted.
My father has replaced the processor in his old Laptop, then he upgraded the memory, then I bought him a SSD drive and a replacement tray for his DVD player, for the old laptop and we imaged his hard drive to the SSD and put his old hard drive in the tray. I also gave him my old USB DVD Drive. After that was done it extended his Laptop life for another 3 years.
I tend to discuss with my Father what he needs to do and then send him links to video's of what to do. He watches the Video's and does the work.
Then again, my Father has a desktop, 2 laptops and a netbook so if something goes wrong he will not be stuck....
My father is now 79.
One of the best things I did for him early on was to buy him a years subscription to Personal Computer World. He found the information in them very useful and kept articles he though would need. I did the same in the early 90's but the Internet took over as an information source.
Stick with it, it does get easier.