In this fun corner, I would like to share with you some of my passions, inspirations and also where I get my kicks from.
In the above text what does "fun corner" mean? Is it an English expression? Thank you.
It's a metaphorical "corner" of the website, like a "corner" of a room: an area away from the center, where secondary activities are carried out.
(It may help to understand that many US grade-school classrooms are laid out with different "activity stations" -- for insance, a computer corner, a science corner, an art corner, and so forth.)
In this case, the "corner" is the area the author has reserved for "fun"--for posts that are not central to the site's primary activities but are valued just because they're entertaining or interesting in themselves.