Hi Hive account@davidpakman, I really liked your series on the cryptocurrencies you've invested in. If you want to write about it, I'd like to hear about what exchanges you've used and how your experiences were with each of them (if more than one). Personally I've only tried Coinbase and Kraken. Coinbase is super userfriendly, but limited in number of different cryptocurrencies, Kraken a bit harder to access but with more options.
Also congrats with your success on Steemit!