You can have a look at the help page, where you can find the basic knowledge for every tool.... http://help.sketchup.com/en/article/116174

@dave r said: My advice would be to skip the plugins for now. Get used to the inferencing and you won't need grids. You know when you're drawing or moving on axis by the color of the trailing line. Also make sure you're orbiting around as needed. Remember you're doing sculpture, not painting. Also, when you see the trailing line hold down the shift key and that will lock the axis in as you draw. Jerry

OK, got it, thanks.

Thanks Pilou. I will definitely check out the other videos at http://www.aidanchopra.com.

Looking the Sketchup for dummies is some entertaining! http://www.youtube.com/watch?v=oHHYCwSlUjk&list=UUx0OiVdh0CL4Qib-_UZfAVg