Very soft bit for this horse? (thnx for the quick answers)?

i would just get either a snaffle bit for english or a curb with very low port for western most bridles you just tie the bit on throught the rings, you tie them onto the cheeck pieces. well its pretty easy once you see the headstall and stuff but if you still can't get it than ask a store person from the tack shop or a horsey friend to help.