Clipping out up a steep hill?

[OakLeaf]

I'm also scared of riding with cars that are parked and what if one of them backs up not seeing me -

You want to be in the lane of traffic, NOT in the parking area. You don't want to be weaving in and out of the traffic lane as you pass parked cars. You also want to stay far enough to the left of parked cars that you don't get "doored."