You will need to arrange your garage and develop storage space to include workbenches. Determine what you need to shop. Start with a good clear out and eliminate things you don't need. Discard old paint and other scrap. Provide away or donate old products, tools or other things that are too good to discard, but that you don't need anymore.
Ekena Millwork 4 in. x 18 in. x 18 in. Western Red Cedar Imperial Traditional Rough Sawn Bracket
The Home Depot