Effectiveness of your marketing plan translates into a lot of sales at the end of the marketing campaign. However, making an effective marketing plan is not simple and there are several things that you need to take care of before you can start the campaign and not worry too much about not getting the desired results. First of all you need to know what the product or service that you are going to promote is. This will help you understand how the marketing plan needs to look and you will also understand what the target audience is. Will it be an entertainment business or an online shopping website. You need to know that you can’t present an MP3 player to elderly people.