One of the first items people are struggling to find is the Options dialog. We used to find it using the Settings menu > Options. With Ribbonized software it is lurking under the Application Menu, the big "R" button in the upper left corner.
It just so happens that you can also get to this dialog if you use the Manage Ribbon tab. Look at the Macros panel and click Macro Security...Options dialog opens with the focus on the Macros tab, just click a different tab. Not a "better" way to get there just another if you happen to think "Manage" when you think of "Options" and have already clicked to open the Manage Ribbon tab.
Similarly you can Right Click on the View Cube in a 3D view and choose Options, change to the Tab you want.
Hope these help you get comfortable during the transition?