Ganache isn't difficult to make.  But mine was never quite as good as the ganache at a nearby gourmet bakery I frequent.  Now I know why.

Valrhona has a short three-part video series on the best method for making ganache.  If you go to Youtube, use the following search terms to pull up the three segments. 

Valrhona 1
Valrhona 2
Valrhona 3