StackPath – CDN with 31 additional data centers (Cloudflare has 150+ data centers, but more data centers = faster content delivery). I get around $1,000/month by referring people to StackPath in my cache plugin tutorials. StackPath recently bought MaxCDN and their affiliate acceptance rate is much lower (depends on your potential volume) but most cache plugins converted to StackPath as their recommended CDN
2. Of course, nearly all my readers are using WP so I’m biased. But even so, most successful affiliates use WordPress. There are less restrictions in terms of hosting (site speed), design customizations, plugins, cloaking affiliate links, lots of things. I would setup a free wordpress.com site just so you can play with the dashboard and see how you like it. Who knows, you might find a theme you really like (eg. StudioPress) and want to make the transition. I would at least test it out…it’s better to make the transition earlier than later.
But the biggest factor that determines how much money you will make, is joining a training program that will help you success. It is very hard to expect success right away if you are a beginner and all alone. The best program that offers you the information, help, tools and support to succeed is Wealthy Affiliates. Some Wealthy Affiliate members are already making over $8000 a month after only 6 months of being a member.