I am the perfect example that old dogs CAN learn new tricks! This Forum is packed with tons of useful information from best detector for where you live and drive mostly (so far there is NOT a single detector that is best for everyone/everywhere), proper mounting possibilities, additional counter measures, fast but intelligent driving habits, and of course @Vortex videos!
Lots of members from NJ here! @NPark is close by and can provide you with more info on what threat's you'll face.
I believe NNJ is mostly Ka. NYS has K, Ka, and laser. Keep an eye out for out-of-tune guns in NYS as well!