If your visitor clicks on one of your affiliate links, say for the beauty cream above, but purchases another brand of cream or even a blender or pair of shoes during their visit, you get paid a commission on those items too. In fact, Amazon’s affiliate links track the shopper from your site to that of the shopper. If he or she completes a purchase within a 24-hour window, you get the commission — whatever it is he or she buys.
Hosting – I suggest joining the WordPress Hosting and WordPress Speed Up Facebook Group and see what real (unbiased) people are saying about hosting. SiteGround was #1 in multiple Facebook polls and #1 in most Facebook conversations (this one too). People who migrate usually see significant load time improvements especially if they’re currently using Godaddy/EIG. I use their semi-dedicated GoGeek plan which comes with 4x more server resources than regular shared hosting (#1 factor in WordPress Optimization Guide) and have <1s load times with 100% scores in GTmetrix/Pingdom. SiteGround also does free migrations.