If you’re in the WordPress industry like I am (whether it be design, development, or SEO) I have accumulated quite the list of WordPress affiliate programs. I excluded those I found unsuccessful or pay too little to make a profit from, specifically ThemeForest, Creative Market, and low quality theme stores like Template Monster. Hosting pays well and I wrote a tutorial for SiteGround’s affiliate program and StudioPress themes which are my 2 highest paying affiliates. Those tutorials have tons of screenshots/social proof especially for SiteGround.
2nd tier.  If you are an affiliate for a particular program and you refer others to sign up for that affiliate program, a 2nd tier program will pay you when the affiliates you referred make sales. For example, I am an affiliate for Ultimate Bundles. If you join their affiliate program via my 2nd tier affiliate link here. I will get a small percentage of any sales you make going forward.
Review : I found the course comprehensive and I learned a lot. I wish I found this course when I still owned my Brick and Mortar store, it would have made a big difference in increasing my traffic. I had people coming into my store years after I was open telling me they had no idea my store existed. I used social media but now I see I wasn’t utilizing the platforms to their true potential and that they were not fully optimized at all. I look forward to using what I learned in this course on my next adventure. Makes me excited to get going. Thanks Diego. – Shawn Vesper

Thanks to the way the commission payments are structured, the more bookings that users make through your links, the higher the commission you'll receive. The rates start at 25 percent and go up to 40 percent once you've surpassed 501 bookings. To clarify, that means 25 percent to 40 percent of Booking.com's commission, so don't expect to get that percentage of the overall cost of the hotel stay.
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. 
Let’s say you have a promotions page where you’re promoting a product via affiliate links. If you currently get 5,000 visits/month at a 2% conversion rate, you have 100 referrals. To get to 200 referrals, you can either focus on getting 5,000 more visitors, or simply increasing the conversion rate to 4%. Which sounds easier? Instead of spending months on blogging, SEO, and social media marketing to get more traffic, you just have to increase the conversion rate by 2%. This can include landing page optimization, testing your calls-to-action, and having a conversion rate optimization strategy in place. By testing and optimizing your site, you’ll get far better results with much less effort. 
Affiliate Disclaimer – if you sign up for SiteGround using my affiliate link I will donate a good chunk at no expense to you. This year I donated $3,000 to feed the homeless in Denver. In 2017, I donated $3,000 to American Red Cross at Hurricane Harvey. Your support helps and I genuinely appreciate it. I try to make my reviews unbiased and backed by evidence in the form of Facebook polls, tweets, and real conversations. If you don’t want to use it, here’s a non-affiliate link to SiteGround. Either way I truly believe they’re the best host and that your site will run faster/smoother… do your research on Google and Facebook groups and you’ll find most people say the same.
This domain can work for people in two ways. One is to get sudden bursts of income by selling a certain product. The second part is selling a service that gives you recurring fees. This course on Affiliate Marketing Strategy for Stable and Recurring Income can be very helpful if your objective is the latter. At 5.5 hours and 56 lectures, this is very extensive and useful for those looking at mastering this subject. Details are available here.
Cost per action/sale methods require that referred visitors do more than visit the advertiser's website before the affiliate receives a commission. The advertiser must convert that visitor first. It is in the best interest of the affiliate to send the most closely targeted traffic to the advertiser as possible to increase the chance of a conversion. The risk and loss are shared between the affiliate and the advertiser.
SEO: getting consistent traffic by writing AWESOME content about your keywords (there’s a phrase “length is strength” in SEO and this paid off big time for me). Maybe you’re doing videos or an eCourse, but I found blog posts WAY easier to update which means less maintenance. The biggest factor by FAR was the time I spent meticulously creating my tutorials… which eventually resulted in a sudden 3x increase in SEO traffic