The Biggest Mistake Internet Marketing Beginners Make The single biggest mistake that internet marketing beginners make is to let themselves get bogged down in the technical issues of website design and creation. This leads them no time or little time to concentrate on what actually makes money, namely marketing. To avoid making this mistake, newbies should invest a little hard cash upfront to hire a technical expert to do the hard yards for you. It will be money well spent as you can go about actually learning how to make money with internet marketing.