Obtain an animation program, such as Adobe Flash CS5 or or Adobe Director. These programs will allow you to create and organize a variety of animations and complex processes that can then be saved in popular file formats.
Create the images and text you will be using in your tutorial using image creation and editing software, such as Adobe Photoshop or GIMP. Several engineering-related images are also available for purchase through websites such as iStock. If you do not wish to take the time to acquire the necessary skills to operate a new program, Flash CS5 and Director include basic image creation utilities.
Import the images and text you have created into the animation program. Use the tools provided within the animation program to choreograph your animation. Flash CS5 allows users to create paths of movement and visual effects such as shimmer and shape distortion for each of their animated items. Documentation provided with the software will provide the necessary information on proper use.
Record narration for your tutorial using a basic audio recording program ,such as Audacity, and a microphone. Most computers are equipped with an onboard microphone; if yours is not, consider purchasing a USB recording device such as Logitech's USB desktop microphone. Audio recorded into Audacity or other audio workstation can be saved as WAV, AIFF and MP3 files and then imported into your animation program. Websites such as FreeSound include several engineering-related sounds that can be imported directly into your animation.
Save your finished product as a SWF or GIF file. These file formats are acceptable for use with websites and can also be opened independently.