Accessible Audio and MIDI Production with the Reaper DAW and OSARA
If you are just starting out with Reaper, I recommend listening to the tutorials in order. Of course this is not necessary but they do build on each other and at times rely on knowledge gained in prior episodes.
Installing Reaper with OSARA and SWS – RC01
Reaper Basics, Tracks, Media and OSARA Configuration – RC02
Audio Editing with Time Selections in Reaper – RC03