For any humanoid with more than 1 HD, you already got them with your humanoid starting skills. For humanoids with 1 HD or fewer, you replace the starting skills with the class skills.
I found that in the SRD (which I have readily available) under Improving Monsters > Monster and Class Levels.
Yeah, in the on-line SRD it was a little unclear on what would happen if the monster had multiple hit dice. By which I mean is was very clear and I was hoping it meant something else.