Have you seen the readme file on that page? Basically what dependencies and how to install and run its information are available on that page. There might be not a clear enough step-by-step installation process, but the information given should be good to start.
See this section:
Here I am again, It's been quite difficult to obtain all the necessary dependencies but I made it, the problem is that I still don't understand if MAIAN is a standalone software or it's part of another thing (maybe Python, I don't know).
Because the main installation file is apparently unlocatable, and calling commands via terminal doesn't lead to anything.