123D Basics tutorial

Overview
This tutorial will introduce the basics of the "123D" 3D drawing software. You will be learning the fundamentals of 123D as you create a 3D model of a house.

Lets get started
1. The first step that should be taken whenever you are going to use 123D is to CHOOSE THE UNITS OF MEASUREMENT. Look down at the bottom   right corner of the screen, there you should see a bar with the centimeters abbreviation(cm). The units will start in centimeters by default. Click on the "cm" and a list of options will appear. For this tutorial, keep the units in "cm".

2. The next step is to begin the drawing. On the top of the screen you will see a bar with multiple symbols. The two you will be using through this tutorial are the two on the left, The pencil symbol (labeled "sketch") and the box symbol (labeled primitives).

3. To begin the drawing, click on the Box symbol and choose the Box option. When you do this, three grid axis will appear. Drag the mouse over the bottom axis. This will allow you to create on that axis. Next, you could either click on the grid you wish the first corner to be, or just type in the coordinates. Whichever you choose, start the box at (6,6), and make the box 8cm by 8cm. I would recommend typing the coordinates. Now that the base is established, the program will ask you to "extrude" the box. This just means adding the third dimension to create the box. Extrude the Box 8cm.

11. After creating this house, you know how to build just about any basic polygonal object.