LCD and Viewfinder
Canon 30D has a Fixed Type 2.5″ LCD screen with a resolution of 230k dots. At only 2.5″, the screen is on the smaller side and 230kdot resolution is lower than most of the recent models in this class.
30D has a built-in Optical (pentaprism) viewfinder. The viewfinder has a coverage of 95% and a magnification ratio of 0.56x. 95% coverage means that what you see in your viewfinder while shooting will slightly be different from the actual image.
Max Shutter speed
Canon 30D can shoot continuously at max speed of 5 fps and has max shutter speed of 1/8000 sec.
30D has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Canon 30D features a Phase Detection autofocusing system. The AF system has 9 points to choose from.
Unfortunately Canon 30D doesn't have Video recording ability.
Connectivity and Storage
Canon 30D has a USB 2.0 (480 Mbit/sec) port to connect your camera to other devices.
Canon 30D Features Compared to Main Competitors
You can download Canon 30D's User Manual here