The trick is to read between the lines to get an understanding off what the job involves; and what they really want (it’s not always very clear). You need to give them a good reason to bring you in for an interview so that you can convince them you are the right person for the job. Remember that nothing is more attractive to any business owner/operator than being recognised and appreciated by outsiders AND there is no better way to demonstrate this than to show you have done your homework and checked them out.
If you’re waiting for a sign to get started, THIS IS IT.