The game uses 2 packs of cards. The stock cannot be redealt. Clicking on the stock will transfer 1 card to the waste stack.
Waste (1 stack). Cards can be be moved from here to tableaux or foundations.
Foundation (8 stacks). Build in suit and up, e.g. a 10 goes on a 9.
Tableau (10 stacks). Build in suit and down, e.g. a 9 goes on a 10. Any card may be placed in an empty tableau.
Wikipedia