Milestone 3: Overview

In Milestone 3, you will create guides showing how to replace the major components of your device.


When you finish this milestone you should have completed the following:

Guide Images

  • Shot well-lit and correctly exposed guide photos in landscape orientation
  • Shot images for the replacement guides showing a person’s hands performing the actions being described without obstructing the view
  • Placed the main focus of each image in the center of the frame and zoomed in far enough
  • Shot images free of blur caused by camera shake or small image sizes
  • Set correct white balance for all pictures throughout the replacement guides
  • Shot photos on a clean white background, free of distracting clutter

Guide Text

  • Written directions that are easy to understand and follow for an audience with an average to below-average technical background
  • Written replacement guide steps that are free of verbose and muddled directions
  • Avoided vague language and outlined the procedure with adequate detail
  • Correctly identified the components inside the device and the tools being used in the procedure
  • Written replacement guide text that is free of major errors in grammar, punctuation, and spelling
  • Noted the head types and screw lengths (in mm) of every screw in the guides
  • Used the standard format for titles (‘Device Component Replacement’) for the guides

GUIDE mechanics

  • Correctly used prerequisite guides to create an easy-to-follow “chain” of replacement guides
  • Included a brief summary and a descriptive introduction outlining the procedure being performed
  • Filled out all parts of the Details section, including the difficulty, time required, and tools
  • Correctly used colored markup in guide photos with bullets appropriately colored to match them
  • Made proper use of the Note, Reminder, and Caution bullets when they are appropriate

Email Us When...

...your first guide is complete. We'll be happy to review your guide, answer questions, and provide feedback to help with the rest of your guides.


In this milestone, you will create separate guides for the replacement of each major component of your device. (Remember, you are not responsible for creating a teardown or for repairing broken components.) Since reassembly is usually just the reverse of disassembly, you should not write reassembly steps. The final step in each guide will show the removal of the component being replaced. By default, each guide automatically concludes: “To reassemble your device, follow these steps in reverse order.”

Each completed guide should contain the following:

  • A title and brief (1-2 sentence) summary
  • A descriptive introduction
  • Estimated difficulty and time required
  • A list of any required tools
  • Step-by-step disassembly instructions written in clear, complete sentences
  • An accompanying photo or photos to demonstrate each step
  • Visual markup, when appropriate, highlighting key areas of the photos, matched to color-coded bullets in the text (See guidelines here.

Keep in mind that your final guides will have a global audience, so you shouldn’t rely on the text alone to communicate key information. Ideally, your readers should be able to complete the guide using only the photos, or only the text. Both the written and visual portions of your guides should work together, yet be able to stand on their own.


The number of possible guides you could create will vary depending on the complexity of the device. For example, the iPod Nano 3rd Generation has only four guides for the entire device, while the iPhone 5 has more than 20. To come up with a list of possible guides, first determine the major components within your device.

For example, a typical laptop might contain the following major components:

  • Battery
  • RAM
  • Keyboard
  • Hard Drive
  • Optical Drive
  • Motherboard
  • Heat Sink
  • Fan
  • Speakers
  • Display

When choosing which of these guides to write, try to determine which components are most likely to fail or require an upgrade. You can find a list of suggested guides for common devices in the Student FAQ.

Remember to only take on guides that you’ll be able to finish! It's far more useful to have five finished guides than ten half-finished guides.

Example Pages

Check out some awesome student guides here: