To tame: hold a torch it will land on your shoulder, do the task it says on screen, (xp via gathering, xp via killing things, xp via crafting.) then feed a kibble or meat, rinse and repeat.

P.S. when the task it gives shows up on your screen DO NOT GET ON A DINO. You must do the task on foot with tools and weapons. I recommend carrying fiber around since it’s light and just crafting drawing paper if you have bob’s tall tales (For the xp via crafting task.) For the killing task target small things with a sword or a pike. For the harvest task just hit rocks or trees.