Hi, sketchup is not as complicated as you think it may be, try it out with the free download ( i am not advertising and trying to get you to download it because i get money, i am doing this because i think it is a very fun software that you should use!). keep reading to learn the basic points, remember sketchup is 3-D.
Step 1: Square Tool
title says it all.
Step 2: Circle Tool
Step 3: Curve Tool
Step 4: Paint Tool
Step 5: Polygon Tool, a Hexagon
you can propably change it to a octogon or pentagon but i wont show that because it hardly ever gets used however i will put it up if i get 20 comments or pm's asking.
Step 6: Push/ Pull Tool
Step 7: Goodbye Now!!
thanx for reading, have fun, if you make something cool, share it!