Thanks for feedback!
About receipts: SPOILER*You should do betting or find a one of the secret rooms to get them*SPOILER
About controls: there are in-game tutorial and Read Me, just from the start. All information about controls and other mechanics are included.
To read - open them in your inventory (controls are: X, Z, arrows)
P.S. If you write a little review about game in general - it would be great!