Do a Google search to find the top blogs, forums, and publications about your course topic. Read the most popular articles on those sites (as shown by the number of comments and shares on social media). Then, read the comment section of those articles. You’ll often find feedback (positive and negative) in the comment section, along with questions that were asked by people in your target market.
Established back in 1998, HostPapa operates three state-of-the-art data centers. Equipped with multiple GigE fiber connections to the internet backbone, the company built out seismically braced racks and cabinets, fully redundant Liebert HVAC cooling systems, a diesel generator that can run for weeks and a preaction dry pipe fire suppression system.
You could think of the sites that share your server as your roommates; there's really not that much separating you from them. Sure, you can close the bedroom door, but they can still cause nightmares for you in the kitchen and the bathroom. In web hosting terms, all the sites share a single server's resources, so huge traffic spike on Site A may impact the neighboring sites' performances. It's even possible that another site could take down the shared server altogether, if it crashed hard enough.
It should be noted that Bluehost has a known issue that has been ongoing for years now that precludes the ability to access CPanel on the Safari browser. This effectively precludes any advanced web administration from an iPad and severely compromises the capabilities on macOS' default web browser. I ask Bluehost's support team about this just about every year and they continually come back with a generic "we're working on it," so clearly not a high priority for their team.