Is it good to use unity make a card game?

I’m planning to use Unity to develop a online game where it can supports up to 4 players in a match. Can anyone tell me where should I learn from if I’m wanna do online game like this?

Besides, I wanna ask is it possible to put Unity games on Facebook?

It can be used for this sure. Have you looked at the documentation (on the Help menu)? Also google ‘how to write card game programs’

Yea I did have some experience on using Unity but not to online game.
Not sure is there anyone knows any good tutorials that I can learn from.