In a recent AE tutorial I was enjoying, I was prompted to go to animation and browse presets to try them out, which launches Bridge. When I double clicked the preset I wished to use, AE displayed a message: After Effects error: Can't import file, unsupported filetype or extension. The extension after every effect in Bridge is: ffx
I tired calling Adobe, but held endlessly...
Animation presets aren't files that you import. They are collections of layer properties that you apply to layers. Applying them from Bridge is (I think) a pain; it's much easier to apply them through the Effects & Presets panel. See this page for information about applying animation presets (and effects). See this page for an overview of what animation presets are and how you work with them.
But, really, since you're new to After Effects, I very strongly recommend that you begin from the beginning and work your way through the getting-started resources here:
Thanks for the info!