Review Ellen Luptons basic concepts – and examples of –grids. The site isn’t super intuitive – she is a Print person – so click around to view the various examples and notes within this grid area of her site.
Read the Grid Design Basics article at Dev.Opera get’s into the construction of complex grids. This is not an urgent read at the moment, but very informative.
Read the Article in the Best of Smashing Magazine(.pdf) regarding setting up PhotoShop for Web & Hand Held Devices. Set up your color space as indicated.
Finish the Photoshop Mockups with these three articles in mind.
