Buy a good pair of comfortable shoes, have a camera around your neck at all times, keep your elbows in, be patient, optimistic and don’t forget to smile.
The lovely thing about street photography is the best of is absolutely no way you can stage or even think of - it just like - it happened and isn't it weird and it is gone.. I think the crazies stuff is the stuff that is generally real and the stuff you can make up is less impressive.
I’m left handed, have a double jointed finger and almost lost my thumb when I was younger. I resent the fact that cameras are not made for lefties.
Time... It's all about time. You need lots of it. If you can afford this most cherished commodity, then you will be well on your way. Apart from that, good shoes, a degree of empathy, optimism and lots of spare batteries.