A few suggestions
To purchase comes in various flavors. If you decide to become a historic collector, I would start with Stuart Kaplan's Encyclopedia of the Tarot, Volume II for various samples of many historic decks.
By all means, check out Tom Tadforlittle and Andy's Playing card sites online to learn about various reproductions.
Over time, you can browse collections at Alidastore.com, see if you find one or two titles in Kapan's Encyclopedia or you can post the title in the search engine of Tarotgarden.com. If you can wait a week or two, compare the cost on Tarotgarden.com or Alidastore.com to see what the reproduction would cost.
Alternative listings might be Amazon.com or Trigono.com for the titles. Over time you'll find out what you like and hopefully, it will be one of those nice areas that you can revisit periodically.
Mari H.