I have some rudimentary knowledge of cabling and wiring but I would like to expand my knowledge. Currently, if we need any rewiring done for our PBX system we call in contractors which is expensive. I'd like to find some resources and guides that can help with cabling and wiring. I haven't been able to find a good comprehensive guide.
Also, I'm looking for some suggestions on what types of hardware I should keep with me to help. Punchdown tools, tone generators, cable testers, etc.