you probably should wear glasses and gloves, but its not 100% necessary, I used to, but I never fell like putting gloves on when I am fraging a rock, always seems to get in the way
Zoanthid flesh is toxic, by simply touching it nothing will happen, but If you ever frag them, you can get their flesh on your hand, and if it gets in your eyes, mouth, ect it can be dangerous.
It really nothing to worry about, just wear gloves if you frag, but if you just want to adjust a zoa rock or place your hand in the tank you dont need to wear anything
If your a beginner you probably wont want to frag either, so you have nothing to worry about, zoas are easy to keep and grate corals for beginners
good luck