Perhaps you need a recap of the rules of the game - here it is. If you are a complete beginner, you might find my guide on how to play Spider Solitaire with 9 steps and graphics useful.
The two-suit version of this game uses - as the name implies - two different suits, namely the hearts and the spades. Two full decks are in play, and the goal is to place the total 112 cards in eight nice stacks on the foundation ranked perfectly from ace to king.
To get there, you build up the run of cards as the game progresses. You can always move a card onto a higher-ranking card regardless of color. If you have seven of spades, you can place it on either eight of spades or eight of hearts. In the end, though, you have to have the run of cards in the same color to be able to move the stack to the foundation. And you can only do that when the stack is complete from king to ace.
You can move a run of cards together, but only if they are from the same suit. You can't move them simultaneously if, for instance, a four and five of hearts lay on top of the six of spades. In that case, you can only move the two hearts at once.
The two-suit version of this game uses - as the name implies - two different suits, namely the hearts and the spades. Two full decks are in play, and the goal is to place the total 112 cards in eight nice stacks on the foundation ranked perfectly from ace to king.
If there is a blank space on the tableau, you are free to move any card or run of cards up there.
When you want to move one or more cards, you don't necessarily need to drag them. You can just click, and the card - or cards - will move to the most logical position.
When you can find no more moves to make, and the hint button can't find any moves either, you go and click on the stock to get a whole new layer of cards to play with.
May fortune favor you!