Keep in mind this guide is not intended to be a full 3d modeling tutorial. I'm going to assume you know some basics , if you want to learn more about modeling with Blender and Deled 3d there are lots of tutorials available online and creating another tutorial would just be reinventing the wheel.
To start we are going to create the basic farm exterior. I'm going to use a square instead of a rectangle. Once you have loaded Deled 3d go to the create/edit panel and under the item creation panel select Rectangle.
Next select the top view window. Before we draw the rectangle make sure the snap to grid function is enabled. You can toggle it on or off with f8 or go to view > options > environment and select snap to grid. Snap to grid will automatically position our shape along the lines of the windows grid. In top view we want to create a square 16 x 16 units long. Hold the left mouse button down then drag the mouse 16 squares down and 16 square to the right. Try to position your square to the center of the screen.
Try to keep the Rectangle close to the grid lines as possible. Don't be concerned if you're a little off. The snap to grid function will correct this for you. Select the 3d view the hold the right mouse button then move the mouse to pan your camera view down. You should see the rectangle in center of the screen.
Now we are going to create the fence on the border of the farm. To do this we are going to use a series of rectangles which will paste a repeating texture of a fence onto. Like I said nothing fancy. Select front view window and select Rectangle from item creation. Now draw a rectangle 1x2 units on the grid(1 high 2 wide).
Shift left click the rectangle you just created to select it. In the geometry tool box make sure the MOVE option is selected. Now move the rectangle to the back left corner of the farm. You can do this by holding the left mouse button and dragging the mouse. Use the top and front view to move the rectangle and snap to grid will help you place the rectangle on the corner.
The picture about is how the model should look so far. Now we will use the extrude tool to create a series of rectangle polygons. Select the rectangle then under the create/edit panel select edge in the edit mode tab. In the geometry toolbox select extrude. Select the front view and use the middle mouse button to zoom towards the rectangle. Each edge will now have a square on its center. Select the right edge by left clicking the square at its center then hold the left mouse button down and drag the edge to the right two units on the grid. Release the mouse and the edge will snap to the grid. Repeat this process until the rectangle covers the entire back border or the farm.
Now we are going to copy this border and position it on each edge of the farm model. Select the rectangle border then press Ctl+C to copy it then Ctl+V to paste it. Make sure you select object mode from edit mode panel first. Using the top view port position the copied border onto the adjacent edge of the farm. Then press Ctl+V to make another copy. We need to rotate this copy first before we position it. In the geometry tool box select rotate the under the rotate properties menu(at the bottom of the create/edit panel) enter 90 into the Y box and press enter. Your border should be rotated parallel to left and right edge of the farm. Now position this border and repeat the same process for the other side. Once you are done your model should look like this.
Now we have our base for the farm we need to add some textures. In the next two tutorials. We will use Gimp to make a simple grass texture. Then we will learn how to paste a repeatable fence texture onto our farms border using UV wrapping.
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