If you are thinking of installing network cables in your home...
5 years ago I installed CAT6(A) in my home. We were doing a full rennovation at the time, with walls and floors stripped back to bare concrete, and I thought it would be helpful to share some of the lessons I learned from my personal experience about what I did wrong and what I would do different if I could do it again.
Be careful with CAT6A. It has a plastic spine that makes it have a large bend radius. It is nightmare to terminate in a 25mm backbox. Heck, even in 35mm. The cable tension makes it want to rip the cables out of the module. You can strip all the sheathing off, but then it also becomes quite brittle. I would go with standard CAT6 (non plastic spine) if I did it again.
Unless you are prepared to install a port next to every power outlet, I ended up with ports in places that were no longer convenient to me later down the line as reconfigured rooms. Again my fault, but just something to be conscious about. You really want to be sure exactly where you want your devices when planning out the sockets.
If you are putting cables in walls, I recommend put them in full conduit so you can pull new cables through if you need to (for example, later replacing with 10 gig fibre). This can be really difficult when cables need to do through concrete subfloors as you want to level them afterwards, which imedes access. The same is true of joists, as there is a lot of friction.
Always terminate your cables into modules and your patch panel before doing any plastering or drywall. You don't want to plaster the wall up and then find out you botched the termination of one of your sockets.
Always leave a service loop at the patch panel end in case you need to terminate cables or move the l patch panel.
Patch panels and racks take up a lot of space. It's less then ideal in flats unless you can put them high up on the wall in a cupboard somewhere. Mine took up precious storage space in the cupboard sitting on the ground.
Always do 2 runs per socket, and have dual sockets. This gives you an element of redundancy in case one cable fails, or a module fails, and you cannot terminate it because the cable is now too short.
Conclusion:
If I could do it again, I would not install ports in individual rooms.
Instead, I would install 1 drop in each ceiling for a UniFi ceiling mounted wireless access point, powered by PoE, fed by a Ubiquiti PoE switch in a cupboard.
This keeps the set up quite simple, but will mean you can have more or less gigabit speeds in every room, even when your entire family is on the WiFi.
Your wireless network still has a wired backbone, you set the transmit power for each AP to low, and then you offset the channels to keep interference to a minimum. Each room then has it's own dedicated wireless channel for maximum data rate and minimal latency, without suffering from contention caused by 4-5 devices using the same bands at once.
I hope this provides some value to you all