okay - i’m pretty much a 0 web developer (and to be honest didn’t read the page but just looked at the code) but maybe you just think of it as being super complicated …? (or i’m misunderstanding the problem you seem to have …?)
the example doesn’t show you how to do general programming - if you want to create a shiny app you can find tutorials all over the web i would assume - but if you want to store/retrieve data on/from the network with your webapp you do it like this:
you tell the app its name, author, vendor , … , authorize it and create a handle/link to the network from your webapp
→ now you can start storing stuff on the network
by creating a data handle and storing the data you want in mutable-data-object 
… a little bit further down there is an examples on how to read the data
…or how to update MD-files …
it might help to start out by playing a bit with the safe api playground by @hunterlester which should enable you to understand how different things work and how to use the tools
but if you have suggestions for improvements I’m very positive feedback is very welcome and posting suggestions (e.g. in the dev forum ) would help the next developers to easier find their way into the network
What is it you would like to see in addition to storing on safe/retrieving from safe …?