Nuts and bolts tutorial part 1

Hello, I've chosen this tutorial because it is creating a more technical object than artistic and is a good way to learn some more techniques and tips on shortcuts. Here is the link below.

http://www.blendtuts.com/nut_bolt_part1

There are a few things I've learnt from this tutorial, the first is the loop cut shortcut Ctrl+r. This is a handy way to put a seam into any object and you can increase the number of cuts you can make by using the mouse wheel. Another thing is insetting. By pressing i on the keyboard with a face selected it will create faces around the edge of the plane as well as one in the middle. This is a good way to make holes in objects of pull the middle out or in.

Selecting a loop of edges or faces is made easy by holding the Alt and right clicking on an edge that makes part of a loop. This is much easier than trying to pick out a line of vertices in a complicated model. Especially in wireframe mode.

Making this model required some subdivision of surfaces. Pressing the w key will open the subdivision menu which gives many options. Another handy trick if you need to do the same action multiple times is the Shift+r function which repeats the last action you took when you have selected another area.

Here is a picture of my efforts from part one.
 

There's something weird going on with the surface, I don't know what that is but hopefully it will fix itself when I get to texturing and rendering the nuts in part two.