I’m currently stuck on this and have no idea where to start. Are there any resources that I can use to help me learn and understand these concepts?
Try your hand at the IP Addressing Basics lab first.
Challenges are optional, but it’s good you want to do them. Some are really tough and make you think about what you did in the lab.
If you know nothing at all about networking, I recommend Cybrary’s Network+ Network Fundamentals course :
I think this person also does a nice job as well: