The bolt on the crank is usually very hard to get off, the pulley shouldn't be too hard, tap it a few times with rubber mallet or hammer with wood on pulley from various sides, then try to pull it off.
If there are no threaded holes for a steering wheel type puller then it won't have a balancer attached so you will need to use a "jaws" type puller.
It grips the back side of the pulley in 2 or 3 places with center bolt on to the crank.
The ones with balancer/damper will always have the threaded holes, since using "jaws" type pullers can damage balancer
Those 3 little holes are probably there to remove weight to balance the pulley.
Not sure on your year but you may want to pull out the Crank shaft position sensor before pulling out the pulley
Behind the pulley next to crank timing belt gear will be the belt guide, looks like just a large washer, don't forget to put that back on when reassembling or belt can work its way off
Last edited by RonD; 01-16-2016 at 11:55 AM.