How to Trade Bitcoin and Ether for Free on GDAX

Sign up for Coinbase here.

How to Buy Altcoins (eg. Ripple) With Poloniex and GDAX

Sign up for Poloniex here.

Transfer Bitcoin from Coinbase/GDAX to Exodus

Download Exodus wallet here.

Buy 3 water-resistant USB keys here.
(Make sure to back it up in more than one place!)

Or use a Hardware Wallet for even more security:
Ledger Nano S