This is not a Photoshop tutorial but a good example to be inspired for new designs. A great video will show the transformation of a sketch to a cool icon. So if you are good in Photoshop, give a try to this.
Specially for this post, I select some of my favorites Icons Pack from DeviantArt website. Icons with different shapes and color where you can use in applications or projects.
The first set is make by Wojciech Grzanka. A pack with 128×128 icons not for commercial use.
iPhone tool box is a free resource for the iPhone, a really big resource where we can find free wallpapers, free icons and some apps for iPhone. Is cool when you go to see any wallpaper for the iPhone, because the popup iPhone is coming out and showing your the preview how that wallpaper will look in your phone.
DrinkRSS offers free RSS and Feed icons to use on your blogs and other websites.
iPhone icons in two colors, black and white in 3G version. Icons format is 256×256 px – Lockscreen, Mainmenu, Backside, Frontside, Wallpaper by d1niel.