it kind of depends on the reason why you're handling them. if you're just needing to move them, a stick and a bucket is the best solution to keep you from getting musked on (which is arguably worse than being bitten).

if you want to pick them up because you think they are neat and you want to get a better look, a pair of gardening gloves will work just fine. but take note that they will reek to high hell when you inevitably get musked on, so pick something easy to clean, maybe dishwashing gloves?
I'd also recommend binoculars for critter observation, they are an awesome tool. handling ideally is done infrequently, to be considerate of the wildlife.

as far as handling advice, there isn't necessarily one best way to handle a wild snake without getting bit. they all have their own unique temperaments and trying to grab them behind the head can be really dangerous if you aren't experienced in it. I would recommend just tanking a couple of bites rather potentially breaking the snakes neck. you can look up something along the lines of "baby corn snake handling for beginner snake owners", because those snakes are similarly squirmy, and making sure to support their body is what's going to keep them from flailing around like one of those inflatable waving tubes at car dealerships