When choosing a computer for online classes, consider factors such as processing power, memory, storage capacity, and screen size. A fast processor will ensure smooth video streaming and multitasking. Adequate memory (RAM) will help your computer run smoothly even with multiple tabs open. A large storage capacity is useful for downloading course materials. Lastly, a larger screen can make it easier to view lectures and read documents.

Both desktops and laptops have their own advantages. Desktops often offer more power and larger screens, which can be beneficial for tasks that require high processing power or for students who prefer a larger display. Laptops, on the other hand, offer portability which is great if you need to study on the go or don't have a dedicated study space.

The type of computer you need largely depends on your coursework. For most online classes that involve web browsing, video streaming, and using office applications, a mid-range computer should suffice. However, if your coursework involves graphic design, video editing, or any other task that requires high processing power, you might need a high-end computer.

A good quality webcam is important for online classes as it allows you to participate in video conferences and virtual discussions with clear visuals. However, if the built-in webcam of your computer doesn't provide satisfactory quality, you can always purchase an external webcam.

The choice of operating system largely depends on your personal preference and the requirements of your coursework. Windows and MacOS are both widely used and support a broad range of applications. Some online learning platforms may work better on one operating system than another, so it's best to check the technical requirements of your online course before making a decision.