You would think that building a shed would not be especially problematic, and it usually is not, but you do have to have a general understanding of what you are getting into before you start. The first thing you need to do is read and understand any building regulations that will apply to your project, because there are certain restrictions on where sheds can be built, and the types of materials that can be used.
Once you have established regulation requirements you next need to have blueprints for your shed. You may be required to show these blueprints at your local building permit office, although it is a good idea to have these blueprints or plans in any case so you will know exactly what your shed will look like.
Having the plans for your shed will also be very helpful when it comes to deciding what materials you will need to get. Some materials you will need to consider beforehand are things like what kind of siding do you want for your shed. Do you want brick siding, aluminum siding, or wood siding? Do you want to set your shed on a concrete foundation? Do you want to put a crawl space under the shed? Do you need to make plans for any plumbing or electrical wiring, and how many doors will you need for your shed?
Knowing what you will use the shed for will help you to plan key factors in its design. If you are planning on using your shed for storage, you will want to make provisions for climate control to protect your belongings. The required floor space and the need for shelving (number and depth of shelves) must be determined if the shed is to provide storage for garden tools, mowers and shovels.
Once you have determined whether you will be using your shed for storage or tools, and have your plans or blueprints made, you will need to buy all of the materials that you will need. It is a good idea to buy extra, since a certain amount of material is wasted during most construction projects. Unused materials can be returned for a refund and any leftover materials you retain can be used to complete repairs in the future.
You will need some basic carpentry skills to handle the construction work, so be honest with yourself about your ability to handle a project of this size. The wisest choice may well be to hire professionals for the bulk of the work after you perform the preparation work.