Your Questions, Answered

A standard 750 mL bottle provides approximately twelve 2 oz tasting pours. For groups of eight or more, consider purchasing two bottles of each wine.
Most young red wines benefit from 20–30 minutes of air before serving, while white and sparkling wines are generally served straight from the bottle.
Not at all. Clear, medium-sized wine glasses allow guests to appreciate the wine's colour and aromas. Matching glasses are more important than expensive ones.
That's entirely up to you. Revealing each wine as it's poured encourages learning, while a blind tasting adds an element of surprise and often leads to more honest impressions.