I got subway smarts. from penn station, take the 2,3,4 or 5 to boro hall. I forget which train stops at penn but im 100% sure one of those trains do and they all stop at boro hall. from boro hall you wanna get out on the court street exit. from there its a short walk depending on your walking speed. you walk torward jay street. once you hit jay street, walk in the direction of the a and c train stops and I believe polytech is on that block. unless you have access to a and c trains, this should become even easier.
for those coming from long island, take the LIRR to flatbush. the LIRR is kinda pricey depending on your distace. it cost 12.50 for me to go from flatbush to mineola. anyway take the LIRR to flatbush, then the subway is right in your face (it should be the atlantic avenue train stop), just follow the signs, pay the 2 dollar fare and hop on the 2, 3, 4, or 5, and get to boro hall. follow the same directions listed at the top to get there from boro hall
if anyone needs help walking from borough hall to the venue, I will gladly help you in person