It starts with confusing basic terminology for trivial usage (e.g. 'signing' and 'address'), proceeds to get worse from there. A 'wallet' is described as hot/c

It starts with confusing basic terminology for trivial usage (e.g. 'signing' and 'address'), proceeds to get worse from there. A 'wallet' is described as hot/cold and hardware/software and single/multi-sig. How do you easily support both 'mainnet' (actual live) and 'testnets' (essentially your fantasy league). You'll need to 'import the contract address' for a lot of coins in order to see your 'stake' (aka balance) in the wallet. On the merchant side, the technological workarounds to higher transaction fees and slower processing time versus traditional credit cards lead to 'L2' aka 'layer-2', sometimes 'on-/off-chain' solutions. And finally the mathematical and network security issues are usually hidden deeply and covered in double-speak to the most critical question - where is the key to your wallet? Hint: it's not the secret phrase...