Here is the original lesson.

1. Start by opening Photoshop and creating a new image. For this example, I chose the dimensions of 400x400 pixels, transparent background. Hit D to set your colors to default: black as foreground and white as background. Go to Filter>Render>Clouds to make what will be the base of the water texture.

2. Now go to Filter>Blur>Radial Blur and use these settings - Amount: 38, Blur Method: Spin, Quality: Good (unless you don't mind waiting a little bit (I didn't), in that case, choose Best). Then, go to Filter>Blur>Gaussian Blur with a radius of 2 because we want this to be blurry to the max.

3. Go to Filter>Sketch>Bas Relief and choose the settings - Detail: 13, Smoothness 10. Next, go to Filter>Sketch>Chrome and select the following options - Detail: 5, Smoothness 2.

4. Image>Adjust>Channel Mixer. Toggle the sliders and dropdowns to suit your taste.

5. Filter>Other>Offset. Fill in the coordinates - Horizontal: 200, Vertical: 200. After that, go Filter>Distort>Twirl select 120 as the angle. Now you may be done here if you like the way it looks, but I had a poor turn out on this example - the four sections were still clearly visible. So to correct this, I added one more filter. I went Filter>Distort>ZigZag and choose - Amount: 10, Ridges: 5, Pond Ripples. That should do the trick, and you will end up with a perfectly seamless water texture.