If you don't want to watch the whole video that takeaway is simple "Move your coins off exchanges into a local wallet where you hold the private keys".
Here's some useful links:
Where Exchanges stand - https://www.bestbitcoinexchange.io/segwit-bitcoincash-hardfork/
Bitcoin - https://bitcoin.org
Bitcoin Cash - https://www.bitcoinabc.org/
Reddit Bitcoin - https://www.reddit.com/r/Bitcoin/
Reddit BTC - https://www.reddit.com/r/btc/
Wallet I recommend - http://exodus.io/
Tips are much appreciated, here's my addresses:
Bitcoin: 18ZwmG5o2yeiUW7WgLB2M8ifMK7AAmgsUs
Ethereum: 0x039D99c841fc21d8975aB8691bF6B7540c06389F
Litecoin: LiDRt5ZkNSX1kUT2SPg9hyirdFji8pkXeR
Dash: Xrk1QLtZMPN7BBQewmGHwW2e2AGraLV3Qx
Dogecoin: DKj7UeXXzQy3KwakNLfoaWm8YAQaCa8pTa
Burstcoin: BURST-CMCH-2BAS-BS5A-57T5M
Digibyte: DLmApKQjqC1tMgMKitwtFL8hubgTjfU2cR