Look at the stuff you need to move from your garage and determine which can be put on shelves and racks and which would require floor space. From there you will be able to have an estimate. Second step: Prepare your plans or a blueprint for the shed. This is very crucial as this will serve as your guide and instructions which will save you time and effort as you build your shed. With your plans, you can determine the exact number of materials that you will need what type of materials and all the other tools that will be required. For manufacturing the parts that you will need, you will have to use a top quality hammer, a power drill, a spherical saw and a number of handheld tools like wrenches, pliers and screw drivers. Different combinations of the two elements allow manufacturers to make different types of steel, and this allows them to make structures for a steel shed. As your shed design grows in size, then you would certainly want stronger steel, you can check out their grade. But for other parts of the shed, you wouldn t need steel that are as strong, for example, for the structure or frame, you will need stronger steel, especially the rafters for roof support, but for the walls and the roof itself, sheet metal would suffice, or even corrugated steel sheets. Make sure that you have sufficient space for your storage shed, allowing extra space around it and about a couple of feet away from your fence. Steer clear of trees that may act as a hindrance to your roof, or have falling branches and fruits that can damage it. Also, you need to check with your local planning and zoning commission about your plans and the dimensions of your brick shed. Pre-fabricated kits can make the job easier, but it can much more costly. There are many books and websites which can help you do your plans, there are even ready made plans which you can just customize to achieve the desired size. Also, doing the frames can be consulted with carpentry books; here you can learn the different styles to ensure that you will be able to create a sturdy frame, in some localities, it is necessary to obtain a permit first before building a shed, consult your local government first. A sturdy and durable shed roof may cost you more now, but because a roof of any structure is the most exposed part, you will be able to save more in repairs as time goes by. Also, you will save money as well and possible worries knowing that your belongings inside the shed is safe. The single most important aspect in building a shed roof is to have a comprehensive plan, if you have no inkling on how to do this; it is wise to invest on it as it is your basis for your building project.