We are getting offtopic a little, if you don't store your BTC on our computer, help topic author please.
Sure thing
Homepage: COINMARKETCAP link is sort of broken (only first C works as a link). Same for coindesk.
Can't speak to the accuracy of the history. On /bitcoin.html, SHA256 is not encryption, it is a hash. Might be helpful to mention its basic properties (i.e. indistinguishable from random data, deterministic, one-way (guessing input from desired output is practically impossible). Otherwise, that page looks good.
Page about blockchain is a bit short on technical details (although, depending on your target audience, that might be OK). Uses is good, might be useful to identify examples of cryptos that support each of those uses.