Definitions of graphic design on the Web: visual communication by a skillful combination of text and pictures in advertisements, magazines, books, etc.
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1. Research: Graphic design is no easy task you must do research for what ever project you are planning to design for. You can do research by searching online for competitor web sites to get some ideas, but do not copy text from other web sites and do not steal the web site layout you should research as many web sites as possible and jot down things you like from each site then try to combine all of the things like from the web sites you found to create your master piece.

2. Having the right tools for graphic design on the web: There are a lot of design software products you can use for your web site design, I like Adobe products such as Dream Weaver for web site design and structure, Photo Shop for photo manipulation and creation.