try your hand at ________

Try your hand at ________ means to try to do something for the very first time, and this will be the first occasion of you putting forth the effort at this thing. The sentence is of course finished by a certain word or phrase to describe what it is pertaining to, such as try your hand at playing poker or try your hand at cooking. This can be used for absolutely anything someone is going to try for the very first time and usually uses their hands for part of the work.