Knowing how to string your own stick is hugely beneficial! It allows you to make a pocket that works exactly the way you want it to work, not the way someone else thinks it should work. It requires a little patience and repetition at first, but it's well worth the effort if you stick with it.
Stick stringing techniques and preferences may vary greatly from player to player. Even the best players in the world may disagree about how best to string a stick. The smart thing to do is take your time and experiment with different stringing styles, pocket placements, shooter setups, etc., and figure out what works best for you.
The following websites are excellent resources for stick stringing instructions: