This video handles the Taming the Beast quest chain from the point just right before Thotar provides a taming Rod for the Dire Mottled Boar in Razor Hill. Thotar will give you a series of three taming rods, each one differs and enables you tame beasts in the next order: Dire Mottled Boar, Surf Crawler and finally an Armored Scorpid.

After getting finished the taming Component of the Quest chain, you need to head to Orgrimmar and talk to Ormak Grimshot inside the Valley of Honor so that you can unlock your pet handling skills: Tame Beast; Feed Pet; Revive Pet; and Beast Training.

Finally, don't forget to visit the Pet Trainer and get visit the Pet capabilities that you will need to give to your pet.