The process is not at all complex and very straightforward. If you don't have any computing skills at all, then maybe you should get someone to help.
The first time you do it you will most likely be overly cautious, like everyone else, but after that it is a 5 minute job. I have ran 4 differing tunes and 20378 is the very best one for me. But you may have your own preference. Give it a try and see how you get on.
Ask as many questions as you like. If it saves screwing up your bike, then don't take a chance.
Suggest you download the manual first to have a read.