I think some of the solutions now being suggested have gone a little over the top for the original posters question.
I will stand corrected if I'm wrong but I understand this is a local business looking to trade locally and at least for now world domination is not being sought!
As I see it you have already done the first part of your sales course and have all the product knowledge you will require, and probably more, now you just need to learn how to put that information in front of the decision makers in the companies you have already identified.
Do lots of research, find out their current suppliers, build a list of all the reasons why you would be a better option. Find out who makes the decisions in these companies but sometimes there will be a gatekeeper you need to get past to access the decision maker, this is just a hurdle.
Personally from what you have said I'd be picking up the phone first and trying to make appointments as this will save you time, if you get an appointment make good use of the time and while you're in the area cold call on a few surrounding businesses, just to try your luck and get more practice at talking to customers, finding the right questions to ask etc, and listening to the questions raised so you are better prepared on the next call.
Sales is a learning process, the questions you think your prospects will ask are not going to be the same as they do ask, and only time in front of customers will give you this information.
Common mistakes:
1. Talking about features and not benefits
2. Talking to the wrong people in a business
3. Approaching businesses that don't need your service/product
4. Not listening to the customer, in a good sales call the customer should be talking 80% of the time.
5. Not asking for the order, closing can be hard at first
6. Thinking price is all that matters to the customer
7. Giving up because you have had a no! Most customers will say no before they say yes, and some will never say yes, learn when to walk away.
It's all a bit of an ongoing learning process, sales is something you learn just like any other skill, but it can be very enjoyable and rewarding.
BTW: Sales and marketing are interlinked, neither can be successful on it's own, salesmen think marketeers live on a different planet and marketeers think sales people are lazy; but you do need both to work together for the best results.
Good luck with it all, if the list you have made is the right businesses then get talking to them some how and you will gain business, sell your company and service but more importantly sell yourself to them, be the local expert and they will buy from you.