Re: >>No Mouse Editing<< selecting clip under current playhead, or adjacent?

Theoreau - looks like you have quite a day ahead of you. To answer some of your questions:

a. Control_command-Right and Left Arrow is supposed to do this, but doesn't.

b. C key

c. Use the timeline index to navigate. Copy and paste your clips as normal.

I actually think you'll find this tutorial very useful with all these questions:

http://library.creativecow.net/payton_t/FCPX_Editing-During-Playback/1

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T. Payton
OneCreative, Albuquerque