Need white wine suggestion

[swayzar]

I am 56 and never been an alcoholic beverage drinker, passed a sip or two or in cooking. Currently, a diet I'm on, suggests a glass or two of White Wine or Champange. No other alcohol is allowed except an occasional "Cordial, such as Creme De Menthe or Schnapps". I don't know what these are. And I don't know what to buy to try. There seem to be dozens of White Wines, etc. I can only imagine that I would only like something sweet and low-level in alcohol content. In non-alcoholic drinks I like things like White Grape, Cranberry or Cran/Ras, Canada Dry. And do I have to go with an expensive wine just to get a reasonable good taste? What would you suggest for someone like me? Can I get samples of any wine to try before I buy a big bottle?