So then if my site is about one thing in particular then should I only target marketing things that are in the same fields or is it ok to throw in some general items that do not pertain to the material of the site? I'm just trying to do a little planning so that I can get organized as to where to start.
I think you should try to sell what's going to make you the most money, not what you think is going to make you the most money.
When I owned that pet food store, I would bring a new item in, thinking it was awesome that people would buy this. But in the end, I'm the only person that thought it was awesome. Now, I had an item just wasting shelf space. Wasting shelf space is the last thing you want, all space must produce, you either give it away, toss it out, or mark it down to the point that someone buys it. So you can reclaim that space.
So when you market something to your audience that's not related, you might be wasting "Shelf Space". Whether that's in the form an an "AD", your "Time", or just "CPU Cycles".
If you have an audience and you know the interest of that audience and you can't figure out things to market to them, then that's where you failed as a marketer. You're not doing your research.
You need to know the "Who", "What", "Where", "When" and "Why"
As with the heartburn example.
What causes heartburn? Stomach acid that washed up in your throat.
Why does this happen? Because the flap between the stomach and your throat is not closing properly.
When does this happen? After eating foods that trigger your stomach to produce a lot of acid or when laying down.
Where does this happen? Everywhere, but mainly at night when laying flat.
Who does this happen to? You're audience.
Now that you know the 5 w's. Research each of the 5 w's and market solutions for them .
Relief - Ant acids, PPI Pills, Medication.
Prevention - Elevated Beds, Stop Eating Trigger Foods, Special Diets, Losing Weights.
Cure - Surgery
Now focus on products that offers one or more of the solutions above.
For example "Losing Weight" - What helps you lose weight (Exercise, Diet stuff , Supplements) - So many things to sell for this.
Ties these items back the the original interest of the users.
These people are actively looking for a solution to their issues, most will try just about anything to solve a problem that's causing them or a loved one discomfort.
You as the marketer, needs to know your audience, know their interest, and provide things that help them accomplish what they are interested in.