Determine your collecting style and focus. Some collectors choose one period in time to collect. Others use souvenirs of trips or special occasions as their criteria, while another segment of hobbyists may pick a single emblem -- such as glasses embellished with flowers -- as the theme of their collection. Figure out what intrigues you about crystal stemware so you know exactly the sort of glass to pursue.
Purchase one or more guides on crystal stemware written by credible authorities on the subject. You might feel overwhelmed when you browse bookstores so turn to librarians and bookshop personnel to get recommendations. Books such as "Crystal Stemware Identification Guide" written by Bob Page and Dale Frederiksen, and "Florence's Glassware Pattern Identification Guide" written by Gene Florence are the types of guides you'll most appreciate.
Develop a search strategy. Collectibles usually are found at flea markets, antique shops, garage sales and collectible showcases held in conference and convention centers where collectors congregate to buy, sell and learn more about their favorite hobby. Find a crystal glass convention within close proximity to your home. These get-togethers are worth the admission fee and time. Join or start a crystal stemware collector's club.
Maintain a record book of your stemware collection, both for insurance purposes and for your own peace of mind. It's not likely you'll move the breakfront displaying your crystal stemware collection with the glasses inside, but take no chances. No need to buy a fancy registry; a notebook will do. Rule off columns to record the date you buy a glass, the price you paid, and pertinent facts or details about the stemware.
Take additional precautions if your collection is extensive and/or valuable. Tag the bottoms of the stems with a code that matches your record book, and photograph each glass in your collection.