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Re:You Suck at Excel with Joel Spolsky (2015) [video] by cm2187 on Thursday September 08, 2016 @09:15AM (#12452638)
On decisionmodels, the website looks like it is coming straight from the 90s (but after all so does excel) but it is a gold mine of stuff to know before one can claims to really understand excel. I highly recommend the reading to anyone aspiring to be a "poweruser".
Re:You Suck at Excel with Joel Spolsky (2015) [video] by osullivj on Thursday September 08, 2016 @09:47AM (#12452937)
Seconded. decisionmodels.com has excellent stuff on the difference between F9, sh-F9 and ctrl-sh-F9, and explains when the formula graph gets rebuilt. When you're building calc heavy XLL addins it's important to have a clear understanding of the behaviour of the calc engine code invoking your addin.