The exchange I use to buy Bitcoin from fiat currency (GBP) is Bittylicious.
The Ethereum wallet I use is the official Ethereum wallet. (But now looking for new wallet after problems with seeing my Ether, as the whole Blockchain needed to sync. See https://github.com/ethereum/mist/issues/1795)
The exchange I use to buy Ethereum from fiat currency is Bittylicious.
I use MyMonero.com
I use Changelly to change Bitcoins into Monero.
I use Exodus and Trezor.
I also use Bittylicious to buy Litecoin from fiat.
Exchanges that I use for altcoins
I use Binance, particularly to buy altcoins using Bitcoin (BTC).
Bitcoin Calculator and unit convertor (eg. BTC to mBTC)
Further Reading, Listening and Viewing
HOW HARD CAN IT BE? CONSULT ON BLOCKCHAIN/BITCOIN (by Mikael Syding)
Bitcoin and Cryptocurrency Technologies (by Arvind Narayanan, Joseph Bonneau, Edward Felten,
Andrew Miller, Steven Goldfeder)
Bits on Blocks (a great blog by Antony Lewis. Antony is the real deal.)
Boxmining on YouTube (by Michael Gu)
Blockchain Insider by 11:FS (podcast)
I’d also recommend the Autonomous ↻NEXT newsletter on FinTech.