I don't post for weeks, and then I suddenly find I have a lot to say; or rather, to ask.
Now that my knowledge in actually writing copy is significant (as we all know, a marketer/copywriter's education is never over), I'm looking to find something that will comprehensively teach me about data, split testing, tools to find out conversion data and so forth.
Essentially, I'm looking for something that's not about the writing, but about the numbers.
I'd appreciate any and all recommendations, provided they have good reasoning behind them. The last similar post I put up got a great recommendation for a general marketing strategies guide; I'd be happy to share the recommendation, should anyone be interested.