You're asking about the absolute basics. Cisco offers a FREE online course on networking basics. You could benefit from that. Barring that, Google or Wikipedia are also a valid resources.
If telus customers has issues, they can feel free to ask in this forum when it happens, like network connectivity, ip address......I can asist in you concerns or questions about network devices, connectivity and help with network devices or network connectivity truouble shooting steps to resolve you problems or conserns or questions