[RWP] Issues with adding effects and selection

[Crystal Dennis]

I've been having this reoccuring issue with Reaper, so I hope someone can help!

When I select a track to edit or move, it doesn't move at all.  I've
been trying to nudge to the left or right, and the track just stays in
the same spot.  I've been playing my music while doing this, and I'm
not sure if that's a factor?  I also can't figure out how adding
effects work:  I select a file, then go to the effects window while
the track is playing and mess with the DB values, and nothing happens.
  Right now I've just been exporting to Gold wave to add effects.

I also have another question:  Whenever I go to the help menu and
click on Ray access, it says my Ray access scripts are disabled and I
need to install a Python API, is that necessary to run Reaper and is
this why I keep on having so many issues with it?

Please help!  And thank you :)
Crystal