Google Nest Community

I was helping a friend install nests. My friend as different legacy thermostats. One had letters and I was able to wire it up and it works great. Unfortunately the other thermostats (they are all the same) has too many wires and has numbers not lette...

I have read the forums and am still really confused. In my apartment we have 5 thermostats. I purchased 4 basic Nest Thermostats and a learning one (for the bedroom). The Learning thermostat installed perfectly. For the Next Thermostats I have tried ...