Over at EconViz I've uploaded an unfinished tutorial I've been working on called, "Why Central Banks Don’t Control the Money Supply: A Visual Tour of the Macroeconomic Dynamics of Bank Loans, Reserve Requirements, Capital Requirements, and Cash Withdrawals."
For regular readers of technical Post-Keynesian and/or MMT material, it likely won't be anything new -- at this point it's mostly an intro to the relationship between bank reserves and broad money supply that shows why the mainstream "money multiplier" view is mistaken.
If you're interested in taking a look despite the incomplete state of it, I'll send you via the EconViz blog post since there is a mini poll up over there: New Tutorial: Why Central Banks Don’t Control the Money Supply…