so hang on, you wanna be goalie? cus that means all of getfighted's advice means nothing to you lol, unless you wanna be a toe-dragging, cellying goalie, which would be pretty jks actually
usually when you're playing pond puck you dont need alot of equipment, just the bare essentials (skates, stick) but since you wanna be goalie, even though you're playing pond with your buddies you're probably gonna want an almost complete kit, cus in the end, you're still putting yourself in front of a flying piece of hard rubber
but ya my only advice is, have a good fuckin time, and practice skating as much as you can, because its only gonna get more fun the better you get. and a lot of ppl think "oh im not a good skater so i'll play goalie" well thats probably the stupidest thing to say because goalies actually need to be really good on their skates