I struggle to make sensible pre-flop decisions

[Renton]

Aside from learning what beats what and the basic rules of the game, play money NLHE has nothing to teach you. An integral part of poker is the fact that you have to risk actual money. Even 1 cent / 2 cent games would be infinitely better than play money.

KK is a super premium hand and generally should reraise and make the pot bigger at every opportunity.

[Eric]

Aside from learning what beats what and the basic rules of the game, play money NLHE has nothing to teach you. An integral part of poker is the fact that you have to risk actual money. Even 1 cent / 2 cent games would be infinitely better than play money.

Agreed. That said, even with play money it is awkward calling 160 from a stack of 600 with KK preflop. It then sets up an uncomfortable decision if an ace flops. I just re-raise all-in pre-flop instead of calling.