GDAX walkthrough survey -- ONLY FOR COINBASE ACCOUNT HOLDERS WHO DO NOT HAVE A GDAX ACCOUNT

1.(Before opening walkthrough) Have you heard of GDAX?
2.(Before opening walkthrough) If you know what GDAX is but have not used it, what has prevented you from using it?
3.(After reading walkthrough) Did you finish the walkthrough? 
4.If you could improve any aspect(s) of the walkthrough, what would you suggest?