If you decide to go into affiliate marketing, understand that you will need a lot of very targeted traffic if you want to make any real money. Those affiliate offers also need to provide a high commission amount to you on each sale. You also need to ensure that the returns or chargebacks for those products or services are low. The last thing you want to do is to sell a product or service that provides very little value and gets returned often.
There is no need to waste your time on the conceptualization of what kind of a web design your business site should feature. Take a look at the examples of some of the most successful businesses in your niche. What tricks and hacks do those use on their web platforms? Learn from their example and create your own design (but don't copy your competitors!).
Making sure that your content is easy for your customers or followers to share seems like a good way to help your online marketing. Having customers spread the word probably helps people see real life examples of your work. I would imagine that finding a professional who can help you create a better online presence would be a good way to boost your marketing as well.
The easiest and most common way to start building an audience for a website is via social media. Depending on your niche and industry, you can choose from Facebook, Twitter, Instagram, Pinterest and several other niche and location-specific networks. Building up an engaged and interested following on social media is a great opportunity to build relationships and once you have their trust, promote your products and services to them.