This is my favorite fan docs on the making of ANH; though I admit I haven’t seen all that many. As of 1-2019 the second half of the doc can be found on YouTube.
The first half however can be found on Videa.
For how long? Who knows! That’s the internet!
this is why jambe davdar makes his trilogy with star wars begins,building empire and returning to jedi.
all find here:
https://vimeo.com/user5888890/videos