If you're going to collect old newspapers, you may just as well take cardboard too. Most people have old boxes around that are just taking up space, and some will even pay you to get rid of them. You start by clearing a space in your garage for storage. One side of a two-car garage, or just an 8 by 12 foot space would be sufficient. If you have a garden shed that is dry, that would work well also.
Some collectors even rent space in a neighborhood mini-warehouse.
Then you visit your neighbors. Tell them you are collecting and hauling away all the old newspapers and boxes in the neighborhood each week. If you have a pick-up truck, so much the better. You drive the car with the trailer. Your helpers, one on each side of the side, knock on each door and ask the residents if they have any old newspapers or cardboard boxes you can haul away for them.