Trying before you buy is always wise, although the dude at Publix doesn't seem to think that applies to toilet paper. Letting you preview a bunch of vino, TastingRoom.
Started by a born 'n raised Cali wine country local, and just now shipping to Florida, TR lets you educate your palate before making a larger commitment by mailing you a flight of six little wine bottles curated to simulate a vineyard tasting experience, minus the rigors of looking at Sandra Oh's face for 123 minutes. The 50ml tasters're about twice the size of a pour you'd get at a vineyard, come with winemaker tasting notes, and're drawn from 750ml bottles using patented technology that stops "flavor-altering oxidation" thanks to a zero-oxygen chamber, also the abridged John Grisham book that cuts out the parts about watching Tori & Dean: Home Sweet Hollywood. Kits let you compare and contrast by grape (e.g., A Taste Adventure...Pinot Noir), location (Napa Valley Reds), groupings like Wines for Cheese Lovers and Hidden Gems (from smaller producers), or by winery, including spots like Acorn Winery and Jacuzzi Family, who're totally warm and bubbly, but you just can't shake the feeling that there's pee in there.
TR's site also offers educational stuff like essays on the vexing Pinot Noir, wine tasting 101, food pairings, and corks v. screw tops, also what you say when you don't try before you buy, and end up with a pack with like six Kevin Seitzer cards.