In my case I did see good examples set by my parents - although their frugality was a little too severe for my liking (they had come from poor backgrounds and grown up during wartime rationing), they did have plenty of good advice like never borrowing money except where doing so can generate a greater return than the debt (e.g. often a mortgage, or making the most of interest free credit for things you have money for and have to buy anyway).

But there were some things that they didn't know about, because for example their generation didn't buy stocks and shares, and had a pension provided by the state. So there are many things I've had to learn the hard way, in some cases too late to get the most benefit. For example, I bought a lot of BP shares on 15 April 2010. That was 5 days before Deepwater Horizon, which not even the world's best financial experts could have predicted. After decades of investing in individual stocks that's when I finally realised that investing in individual stocks is too much of a gamble, and began investing in things like index trackers instead.

I've actually been making notes over the years, initially to help crystallise what I've learned in my mind, but possibly also pass on to my children. It's things I'd have liked to have heard from a trusted source myself a long time ago. So while I hadn't heard of the practice of either a money talk or a money letter, I might consider it now. Judging by the other comments I might be one of the few people here who thinks this is a good idea. But it would be alongside the usual practising what you preach, given that the best way to teach is by example, and that education is continuous.