The law is 30 mph in a congested area, city. Before the test, do a drive by in the area where the DMV is. Try to look for speed limit signs so you know what they are. If no signs stay around 30 mph. If passing a school zone slow down to 25 mph.

For parallel parking the key is to line up your side mirrors with the rear bumper of the car in front. Then pull in slow and steady while turning the wheel slightly, not to far.