Photoshop: fast tool switching
You can get more done with Photoshop when you learn keyboard shortcuts. Just about anything and any tool you want to use in Photoshop has a shortcut.
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» Photoshop tips offers a great, short list:
“‘M’ - Marque Tools
‘V’ - Move
‘L’ - Lasso Tools
‘W’ - Magic Wand
‘K’ - Slice Tools
‘J’ - Healing brush Tools
‘B’ - Brush Tools
‘S’ - Stamp Tools
‘Y’ – History Brush Tools
‘E’ – Eraser Tools”
As the post suggests, print out the list and keep it beside your keyboard until you’ve learned them.
Photoshop beginner: create an abstract background

Here’s a great tutorial for adding an abstract space background in Photoshop.
Abstract Space Background » Free Photoshop Tutorials | PhotoshopStar gives great instructions:
“Here is one more interesting tutorial how to create an abstract space background, for example, for games website.”