Have Broom, Will Travel, a comedy/fantasy.
When Susan Crone Takes up the post of village witch, she gets a bit more than she bargained for. She ends up with a klutzy apprentice, and goes up against Damian, the man-witch. Soon Susan finds herself on a journey to stop Damian's power-mad father from destroying all the magic in the world.
Along the way she confronts an army of mermen, a city stomping monster, a shape-shifting demon, flying monkeys, natives looking for a sacrifice for their volcano god, and some munchkins dealing "Magic Herb". Of course she also has to deal with Damian, and his rather loose definition of "celibacy".
It's available at smashwords, which I believe allows for a free preview.