This Old House offers a reliable and comprehensive article regarding the different types of garage doors. This site also addresses concerns such as the installation, insulation, safety, maintenance and aesthetic qualities of garage doors.
Another online resource that reviews different types of garage doors is DIY Network. This website offers a detailed guide regarding the pros and cons of each type of garage door. It also includes links to the websites of specific garage door companies.
Both This Old House and DIY Network provide an in-depth analysis of garage doors from a basic form, materials and function perspective, as well as recommending certain preferred brands.