As long as you are promoting a product or service that is relevant to your niche market that is fine, as it should interest your visitors. The only time you need to use a different website is if you have something you want to promote that is not related to that site. They is nothing worse than going to a site and lets say its on affiliate marketing and then being confronted with content and adds on how to train your dog.

Another way people get around this is by having a review site and then having a category section on their sites where they promote many different products from many different niches. This however works best if you have review in the domain name.

The next step for you would be to get your self a domain name and hosting, then you need to decide what you are going to create the website with. It could be a html static site or a WordPress Blog (recommended). The domain name should ideally be your business name or something that reflects your products and services.

Mark sure you do some market research on what you want to sell this will not only give you an idea of traffic to your site but will help you to choose a suitable domain name as well.

I am a printing broker and specialty products distributor among other things. I have web sites piggybacked with other some of my vendors but do not have one of my own. I assume would be a necessary item. So what is my next step.

Thank you.

Affiliate marketing is a very big subject with many different aspects to consider before entering the market. If you want to learn more about affiliate marketing then I would suggest going here to a site called Affilorama

Good Luck with your endeavors online.

thanks