Along with immediately gathering resources for tools, clothes, and a temporary base, a new player should try to tame as many Dilos as possible. That's what I do anyway, I just tame every Dilo I see. Now I have a huge pack of Dilos that are an expendable way of fighting bigger dinos, but capable in a group. They are so easy to tame that it doesn't matter if some die. I level them up to about 400% speed (they start at 300%, at least on my server) and the. the rest goes into health and melee damage.