Open a new document in Photoshop. The size should pe 728 x 900 px
If you ask why i chose this size you can see that the first ad on the Google Adsense Ad Formats page has the width 728 px
Create a new layer and select Rectangular Marquee Tool

Editor's Pick in Photoshop Tutorials, March 2006
Learn to create a tech-looking header for your site. You can also find guidelines on creating same-style menu and main boxes in our Photoshop Tutorials category.

Learn how to create simple but effective logos and type layout with this sig/ID Card example.

Before you start designing, have in mind a rough color scheme that you would like to apply to your web site. It seems to me there are 3 categories, or distinct styles, of coloring being applied to web pages:...

Make a new image that's 780x100 pixels wide and high. Make the background transparent to start off with, and click ok to create your new image.
In this tutorial I will show you how to create quite a pretty navbar. It just uses a few simple filters and some basic effects, so it's really easy t.....

Step 1: Start with a large black canvas, in your layers window make a new layer set. Name it Aqua style tabs.

Open a new document in photoshop ( 760 x 700 pixels ) with a white background.
Select Rounded Rectangle Tool ( set Radius to 5 ) and make a rectangle like in the following image. (next image is resized )

Begin with a new file, 720x150, with any background color you want. Then create a new layer in the layers palette. Now take the Rectangular Marquee Tool and draw out a rectangle, then choose the Gradient Tool and make a gradient like the image below shows...

Create a nice effective navigation bar.

Create a fresh looking content box by using carefully stacked layers as well as layer styles and blending modes. This content box is ideal for website using a Web 2.0 Layout.