Happy

I just know learned of this website recently from a friend. I regret not to having of known it before. I want to go abroad very much, but have no chance to. My hobbies like are listening to music (especially English songs), watching movies......
So many, there is nothing particular to do today.

Here 'learned of' and 'having of known' could also be 'learned about' and/or 'having known about'.

'My hobbies are' could be 'I like'. You'd be gramatically correct if you said "My hobbies are liking listening to music, liking watching movies... etc."; but, this is essentially be like saying 'I like liking things', completely redundant.

Always put a space after a comma or full stop.

And you only need to say one of 'just' or 'recently' in your first sentence. It's fine as it is, but you might find saying only one easier.