Open the tall columns first
The face-down cards are where deals are won or lost, and the tallest columns hide the most of them. When you have a choice between two moves, prefer the one that turns a card over in a taller column.
Play from the columns before the stock
A card moved out of a column can uncover something new; a card taken from the stock only changes the waste. Look over the columns before you draw, and draw when you have run out of useful moves there.
With draw one you can go through the stock as often as you like, so there is no need to grab a card just because it is showing. It will come round again.
Empty a column only with a King to fill it
Only a King can go into an empty column. Emptying one with no King ready wastes the space, and choosing which King to put there matters: pick the one whose colour suits the cards you need to place on it.
Don’t rush cards home
Aces and twos can always go to the foundations. Higher cards are sometimes needed in the columns to hold the next card down, so before sending a 5 home, check the other-colour 4s have somewhere else to go.
If you get stuck, Undo is free. Step back to the last choice you weren’t sure about and try the other way.