Simple eh? Not so!
You pick one up, bite into it and... it falls apart - crumbs everywhere!
There is, however, a trick. On the back is a weave pattern of vertical and horizontal lines - light and dark. Set the dark lines horizontally, put your thumb half way up, insert cracker into mouth and bite gently - one nice clean break. Sorted.
Or you could be an animal and stuff the whole thing in in one go and munch away.
I prefer the genteel approach.
Works with digestives as well, but not hobnobs.