First of all, I think your dictionary has a misprint since the word is "grocery".
As to your questions, if you are playing at party poker then there is definately a big difference between the 0.5/1 and 1/2 games. The 1/2 games are full of rocks or TAG players and much more difficult than the 0.5/1 games in my opinion.
Based on your stats it sounds like you are a bit on the passive side. Blind stealing and defense is important. Try playing a few more hands on the button, and raising on the button more often. Stealing the blinds once in 100 hands, or defending the big blinds once in 100 hands will be enough to turn you into a winning player based on the numbers you gave.
Good luck!