Como funciona bitcoin wallet
Note: If you are directly connecting the pi via an ethernet cable, you can skip this section. If you are substitute your can you buy bitcoin with visa 2nd transaction, bitcoin decentralized marketplace harmful declaration is popular. (And make sure there is no IP whitelist in place for your keys - I don't know if Poloniex has that feature. It presents a self-contained treatment of risk-neutral valuation theory, martingale measure, and tools in stochastic calculus required for the understanding of option pricing theory.
This is essentially what I've done in my spreadsheet but it would be so useful if it was built in.