I wouldn't disagree with any of Ed's advice, but I would add...

Don't be too disheartened if you cannot identify the range of fruits
etc that other claim to detect. The fruit-basket style of tasting
note is a relatively recent phemononen, and if you compare note from
different notes for the same wine you will often see wildly different
descriptors.

If you detect, e.g., strawberries or whatever, then fine - take a note
of it - it will help you remember your experience, If you don't,
don't worry - be honest to yourself.

--
Steve Slatcher
http://pobox.com/~steve.slatcher