KEYBOARD SHORTCUTS FOR SKETCHUP

• Space Bar for selection tool
• A for Arc
• B for Paint Bucket 
• C for Circle
• E for Eraser
• L for Line
• M for Move
• O for Orbit
• O for Offset
• P for Push or Pull
• Q for Rotate
• R for Retangle
• S for Scale
• T for tape Measure
• Z Zoom
• Shift+Z for extend