how to use ktc pure coconut oil?
Coconut oil is a saturated fat, which makes it solid at room temperature. Above room temperature, it behaves exactly like any other oil and has a very high smoke point. You don't need to treat it in any special way.

I personally just use a knife or spoon to dig a little bit out of the container.

Coconut oil is considered to have a neutral flavour (with the exception of some "virgin" coconut oils). It's much weaker than, say, olive oil. You'll most likely not be able to detect any coconut flavour from oil alone - you have to use something like creamed coconut (a common ingredient in satays) for that.

P.S. Although it might appear to be similar to butter or margarine, keep in mind that it is actually a cooking oil, unlike butter which has milk solids that burn, or margarine which is hydrogenated to make it solid. Coconut oil is just barely solid and won't always work as a substitute for those other things.