no you can not save a manga as favorite only questions and here's how to
http://www.mangago.me/home/photo/9363204/
You could also make a tag called 'FAVORITE'... Then when you click on your home website and see all your tags you will find the list there once you click on it. That's what I do. You can also click the FAVORITE tag on every Manga you used it on and it shows you automatically every Manga you used it on :)
I've been using this website for so long but until now i still don't know how to save things on favorite. Can you save manga on favorite? If yes, How?? It says i only need to click like. But where's the like button??