This video shows the basic functions i use in google sketchup. I think you need the pro version to get the option to export as 3D model, which is quite important. (you might find a crack somewhere on the internet)
Also, your bars will probably be ordered differently initially, just move them to where you want.
In the video i often click on the symbols, i suggest making hotkey in windows - preferences though, it's way faster and less annoying.

Plugins used:
- vertex editor ( http://extensions.sketchup.com/de/content/vertex-tools )
- libfredo ( http://extensions.sketchup.com/de/content/libfredo6 )
- material tools ( https://extensions.sketchup.com/de/content/material-tools )
- uv toolkit ( http://extensions.sketchup.com/de/content/uv-toolkit%C2%B2 )
- subdivide and smooth ( http://www.guitar-list.com/download-software/sketchup-loop-subdivision-smooth-plugin )
- shape bender ( https://extensions.sketchup.com/de/content/clf-shape-bender )
- cleanup ( http://extensions.sketchup.com/de/content/cleanup%C2%B3 )

BGM:
https://www.youtube.com/watch?v=nZuBLO6jxTs