People are searching for any manner of things directly related to your business. Beyond that, your prospects are also searching for all kinds of things that are only loosely related to your business. These represent even more opportunities to connect with those folks and help answer their questions, solve their problems, and become a trusted resource for them.
The best relationships are the ones where both sides gain something through the connection. So as you engage in link building activities, spread the benefit to both sides. Link to other sites to improve your chances of getting links back to your website. Linking to another site can help you get on their radar. So when you reach out to request to guest post or to be added to their roundup, etc., they will be more receptive to your request. To find similar sites worth linking to, use Alexa’s Audience Overlap Tool. Enter up to 10 sites to receive a list of sites that have a similar audience and probably publish content relevant to your own.
Going into network marketing? Understand that if you're not close to the top of the food chain there, your ability to generate any serious amount of income will be limited. Be wary of the hype and the sales pitches that get you thinking that it's going to work the other way. Simply understand that you're going to have to work hard no matter what you pick to do. Email marketing? Sure. You can do that. But you'll need a massive and very targeted list to make any dent.