Umm everyone learns differently but all adults primary learniing atyle is by doing, or Kanetic learning.  (I have studied adult teaching as part of an old job).  I also come form a family that makes wines.  The best way to learn to identify the smells and tastes associated witht he wines is to have a glass in front of you and smell the wine then try to identify what you are smelling on the flavour charts (then read te winemakers notes on teh back of the bottle).  Do this with every wine you open, have a taste think about the flavours and smells then read te back of the bottle and amell and taste again.  You can aso take it one step further and get grass clippings, put them in water for a couple of hours then smell the water (it will have a smell close to the wine smell than fresh clipping which are too strong).  the same can be done for other scents as well.

i am a discussion learner so tend to need someone else to bounce ideas ff to learn most effectively.  Mostimportantly have fun, your brain will take morein if you are relaxed and enjoying yourself.

Hope this helps.