In my opinion, the easiest way to tame parasaurs are with a bola and a club. Definitely use a bola because they will run if you hit it, so after you bola it it can't move so then start clubbing it till it becomes unconscious. Feed it any type of berries. It is a pretty fast tame in my opinion but give it a few narcotics to keep it's bar down. When it wakes up equip it's saddle. These are very good for a first Berry gathered. Hope this helped!