We'll be working from the bottom up. Start with the brick you want in the bottom row (white in the picture) and attach two bricks to it as shown.
Use 3 more white bricks and 2 more blue bricks and make em look like the third picture.
The goal here is to basically make a square zig-zag chain with 5 studs (those are the dots on top of the bricks) on each side.
Keep adding bricks until your model has a few turns in it then meet me over at the next step.