You can see further details on the latest models of Casio calculators from Casio here and the manuals can be found here, fx-570CW | fx-991CW User’s Guide, and fx-83GT CW I fx-85GT CW User’s Guide.
View a QuickStart video from Casio to help get you started with New ClassWiz.
From Casio – videos on the ClassWiz series, a YouTube playlist of 38 vidoes.
From an absolute favourite Calculator guide author, The Calculator Guide, Inequalities On A Number Line On A Casio fx-83GTCW | fx-85GTCW. I am looking forward to more from the Calculator Guide, keep an eye on these playlists on The Calculator Guide YouTube Channel.
Claire Clay is creating really clear calculator cards for the new Casio fx-83GT CW, her cards and videos are available here.
Joe Kennedy has created this helpful video on the Casio FX-83/85GT, the video covers the following:
0:28 – Setting up Emulator, 2:25 – Changing to Decimal, Scientific Notation and Angle Units, 3:49 – Prime Factorisation, 4:06 – Functions, 6:00 – Stats, Correlation Coeff, Line of best fit, 7:43 – Combinations/Factorials, 8:30 – Memory.