"a little know how"

"Working out is super fun, all it takes is just a little know how".
Is "a little know how" right? If so, what about "a little knowing how"? similar examples please.

"super great fun"

"know how" is an indiomatic term for "knowledge," especially practical knowledge of how to perform some procedure. I would hyphenate the
expression if I had a reason to use it in writing.