This will enable you to test the procedure in a short space of time. A busy road junction is a good subject, or an attractive sunset. If possible, shoot with Aperture-priority AE (AV) mode so that only the shutter speed changes between exposures. This will maintain a constant depth-of-field. It is a good idea to focus the camera manually, if possible, so that the focus does not change between shots. Shoot with a JPEG quality setting, leaving the camera to process the image files.
Next, decide the interval between each shot. Every minute for 30 minutes will only give you just over a second of movie, which is not enough. If you want 10 seconds of movie you need around 300 images, which is 10 every minute, or a shot every six seconds. Short intervals give a smoother movie than long intervals.
If you do not want to be standing at the camera with a stopwatch taking a picture every few seconds then the Timer Remote Controller TC-80N3 plugs into many EOS cameras and fires the shutter at preset intervals.
Once you have your shots, you will need to convert them into a time-lapse movie. Upload the images to your computer, then launch Movie Maker (PC) or iMovie (Mac) and follow the instructions.