Hi,
1) read changelog - only ramen, dev will add pizza soon, maybe something else as well
2) if you "update" the game by installing new version on top of the existing one - you won't lose save data, if you were to uninstall the game and then install new version - your save data will be lost (there was once an issue where save data from 0.2.2.5 didn't work in 0.3, but it hasn't been observed when applying 0.4 patch to 0.3, so don't worry)
3) ... Underss -> raise both arms -> turn her over (waist) -> tuck legs under her -> fuck away
Cheers