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.
The problem with affiliate marketing, like many other home business options, are the so-called gurus and get-rich-quick programs that suggest affiliate marketing can be done fast and with little effort. Odds are you've read claims of affiliate marketing programs that say you can make hundreds of thousands of dollars a month doing almost nothing ("Three clicks to rich!"). Or, they suggest you can set up your affiliate site, and then forget it, except to check your bank deposits.