Your camera keeps count automatically and internally of the number of times you click the shutter. Some manufacturers (e.g. Nikon) include this shutter actuation count in the EXIF information embedded in each photo, but this is not the case with Canon. In fact it is not easy to discover the actuation count for Canon DSLRs! If you Google "Shutter actuation count" you will find plenty of web-sites that claim to be able to give you this information.
Most are based on reading the EXIF data from a photo taken using the camera. Typically they invite you to take a picture (a small, low quality JPEG will do fine) and upload it. A number of these specifically list a whole load of Canon DSLRs amongst those covered (e.g. this one http://www.camerashuttercount.com/ -which lists "Canon EOS 60D"). If you try it, you will find that they tell you that the info is not available. So why include these Canon models amongst those they claim to support?
Another tranche of sites will tell you about a Windows utility called EosInfo. The idea is that you download and install this program (there is a download link about half way down the page), connect your camera to the computer via the USB lead, turn it on and then run EOSInfo. It should connect to the camera via USB and report the info you want. It claims to work on "Canon DIGIC III/IV DSLRs *except* the 1D* series". However, it has not been updated since 2009 and camera models and firmware move on. With my Canon EOS 60D (firmware version 1.1.1), although it is based on DIGIC IV, on connecting the camera and running EOSInfo, the program falls over with a exception error during the connection attempt.
I have found two methods that DO work on my camera:
- Astro Photography Tool (APT). From the download page, download the demo version and install it. Connect your camera to the computer via the USB lead, turn it on and then run APT. It shows a black screen with dim-red text (presumably designed to protect the astronomer's night-sight). The shutter actuation count is shown in the bottom-left corner of the screen.
- Magic Lantern. This is a firmware add-on for certain Canon DSLRs. If your camera is supported download it and follow the instructions to install it on your camera. Once installed, it has a Debug menu which shows the shutter actuation count - amongst other data. (I have been experimenting with Magic Lantern for many other reasons and will post about it in due course).