I never got deep into the "REM state" of study so to
  speak*tongue emoticon*just yet - but I like to study things
  after I experience them and then go backwards for the
  explanations.

  I studied lucid dreaming when I was like 13 years old. I spent a
  short time checking out New Age stuff (my grandmother was into
  Edgar Cayce and all that), and tried out a lot of the tricks
  they show you in those books.

  So lucid dreaming isn't difficult, OOBE isn't difficult. Fun
  stuff.*

  You can train yourself to remember dreams simply by telling
  yourself to the night before as you go to sleep. Keep paper and
  pen nearby or your phone charged up and you can start to capture
  bits and pieces of them.

  The memories fade VERY VERY quickly but the more you capture
  what you remember, the better you get at it. It's a speed game.

  It's hard because they WON'T make sense at first.

  My CogPsych study of dreams start from "What are all of those
  images that pop up as I am waking up?" and I went backwards from
  there until I was satisfied understanding the systems involved.

  A generic overview didn't matter as much to me ; I needed to be
  able to relate it directly to my experience so that it "made
  sense" to me as it was happening as I was waking up.

  This also helps in dream recall because I'm aware of the
  metaphorical manners of the mind and I expect dreams to seem
  strange.