1. Keeper makes the saves, then it is the keeper’s team’s ball
2. The keeper can’t commit a foul as no play can enter the six yard box, if a play goes in he is removed and place outside the six yard box
3. Players can come on the pitch playing FISTF (modern rules) player cannot come on the pitch playing Old Rules
4. Players going off must stay off until used again. If they go off and hit the board or fence then comeback on they must be placed in line of where they came back on, on touch line (FISTF rules) placed where they went off (old rules)
You need to identify which rules you will play to as YouTube videos are mostly modern rules, so watching these videos and then playing old rules will confuse you
Hope this helps, Cheers Simon