1. "Stay off the big ring." Only use it when you have to. - Disagree, ignore the ring/sprocket and just pick the best cadence depending on how your legs are doing at the moment.
2. "Rest in the drops." - Not sure. Works for me after 3-4hrs, others seem to prefer the hoods.
3. "Air is cheaper than Kevlar." Never let your tyres drop below 100psi. Stops glass penetrating the tyre among other things. - Agree.