Step 1: Base

This step is very simple, just make two cards lean towards eachother so it makes a triangle.

Step 2: Base and alternative

You can go two ways with this one, you can add another triangle and top it with one card laying on top(1),or you can lean 2 more cards on the open sides of the triangle(2). the traditional card house is the first one. if you are doing the other, simply top it with a card laying horizontally(3)

Step 3: Finish it

Now just make one more triangle on top of the other two.this may be tricky because the cards constantly slip up and knock it over, then u gotta start all over again...and who wants that?