s3d put up some tutorials on their website. located here
http://www.simplify3d.com/support/tutorials/
also here is the official list of changes for v2.0
http://www.simplify3d.com/changelog/
Added direct USB control for MakerBot-style printers (including FlashForge, MBot, etc)
Almost a dozen new pre-configured profiles for popular printers such as the Replicator 1, Leapfrog Creatr, Printrbot, Solidoodle, and more
New sequential printing mode for enhanced multiple process printing
Added helical printing mode for single outlines parts such as vases or bracelets
Added new method for simple stacked infill or half-height outlines by specifying the infill layer interval
Added wipe option to help avoid excessive stringing with bowden extruders or other leaky nozzles
Vastly improved ooze control settings with more control over retraction behavior
Improved 5D extrusion rates for low layer height printing
Automatic model repair for non-manifold models during slicing
Greatly improved Machine Control Panel support for dual extruders
Previewer has been updated to show entire build by default, play/pause button has new smart rewind feature
New option to automatically load preview after G-Code preparation without extra prompt
First layer height can now be changed without affecting the first layer extrusion width, allows better squishing of filament for better adhesion
Inner perimeter speeds are now controlled based on outer-most outline speed
Improved raft with easier separation from part surface
Bed leveling wizard now includes option to specify custom Z-height for leveling movements
Added option for custom tool change G-Code scripts
Added option for bridging fan speed override
New cylindrical build table representation for delta printers
Improved resizing of FFF Settings for small resolution screens
Improved compatibility for lower-end graphics cards
Removed arc detection and G2/G3 replacement since it was a large source of user problems due to incompatible RepRap firmwares
Better detection and prevention of harmful heated bed temperature settings
More decimal places for finer resolution on layer height setting
Better initial directory prompts after first time installation