You'll most likely put in by sliding your boat down the side of a hill just upstream of Steven's Bridge. The first few miles are mostly uneventful with a number of Class II rapids that will keep you interested. You will have noticed Boulder Creek Rapid as you were driving to put-in and may want to scout this challenging Class III+ rapid anyway.
Below here the river is quite fun with all kinds of interesting Class II and III rapids. The final rapid, Surprise, is well named because you'll come around a bend with current and need to catch a tricky eddy on the right. This rapid definitely deserves a scout due to the large hole in the entrance and the long run out afterwards.
You'll want to pay close attention to the take out at Craig's Beach unless you plan on running the Class V South Fork Gorge below. Carrying your boats up the hill here will be a test of raw strength and teamwork.
You can continue on for 1.8 miles for a great Class IV section called the South Fork Gorge.