If you are using a film camera you will need to go to a local store where they deal with imagery this way here they can take the images, and digitize them for you.
If you are using a digital camera, you will either have a flash drive on your camera (SD Card) or a plug in.I f you have both, either option works: • For the SD Card, you may require a SD to USB converter. • For the plug in, your camera should've came with a USB plug, plug your camera into your computer using said cord, from there most cameras simply work like a storage device, you can access the from "My Computer".
Last but not least. if your using a web camera, you may need additional software, however your laptop/computer should come with some, try looking around your start menu.
When you gain access to the web camera, you can either take a screen shot (the Print Screen button) or the software might have a option to take the picture
To take a picture of yourself with a computer you should use some applications like Skype or Cameroid. These both applications are free picture utility in their respective websites, and you may visit one of them to get the instructions on how to go about it.