There is one piece of vital information you need to know before you can launch a successful marking campaign – your target market.
You need to understand who wants or needs your products or services, where to find these people, and what to say to appeal to them. Dedicating time to clarifying your target market will help you be more focused, more effective in your marketing activities and ultimately achieve a much better return on your investment.

It's important, particularly in PR, to identify who your target audience is to help you direct your messages and communication to the right people in a way that is meaningful to them.

It's important, particularly in PR, to identify who your target audience is to help you direct your messages and communication to the right people in a way that is meaningful to them.

Four simple steps to reach your target market
One of the biggest challenges that small business owners face is ensuring that they are talking to their target market. With limited marketing funds, it is essential that you talk to the right people – your potential customers.

It may sound obvious, but there are many business owners who give little consideration to who will buy their products or services before they begin their marketing. But how can you successfully market and grow a business without this information? Follow these simple steps to help you identify and reach your real target market.

Click here to learn how to know your target market

Yes, you are right. Doing a great PR is one of the basic factor marketing campaign.
Looking at it from another angle, you can use some of the online marketing tools; such as Google Adwords to get insight of the market that you are into.
I could help you analyse your target keywords, especially for your online marketing.