They are not hard to tame at all. If your new to the game and u have basic weapons/tools then u can use your fists or a club. Or u can just use a bolla so it can't move then knock it out. It will take any type of meat except of spoiled meat. They are good 4 being a body guard especially in large numbers.
1.kill some dilos, dodos or compy so that you can collect meat.
2.Craft a slingshot, wooden club or you can beat it with fist (If your trying to knock it with fists choose a low level one; if with slingshot collect a amount of stones first also remember wooden club breaks fast so craft and keep atleast 3 more wooden club for backup)
3.Find a dilo
4.after it's unconscious open its inventory by going near to it and tap and hold. After you need to put some meat which we collected at first
5. Wait.....if your dilo eats all the meat but still not tamed put some more meat to its inventory and wait......