What's the best tutorial for that?
Not so much a tutorial as some extended info: https://docs.evo.im/en/04_extras/multitv.html http://www.evolution-docs.com/extras/multitv/multitv-template-variable
Also, after installing multiTV, in the folder "assets\tvs\multitv\configs" there are any examples that you can play with.
What helped me out was downloading a few multiTVs and see how they were put together. This page has some nice examples that may help you get started: https://www.tattoocms.it/extras/multitvs.html
Thank you