Here are five of my favorite Tarot resources that I use over and over again, all of which are really great for beginners - but can also provide some new ground to cover for experts, too.
Aeclectic.net - If you want to review a deck before you buy it, this is place to go. There are thousands of decks sorted by categories, types, trends, and even the top-voted decks for each year. The site also has a really big, popular forum that can be overwhelming at first, but has a ton of information on pretty much everything Tarot you can think of - and takes a look at oracle and Leormand decks, too.
Facade.com - Online Tarot readings work just as well as the in-person kind, and this site offers the biggest variety of decks and spreads I know to give incredibly detailed Tarot readings. The site also provides readings for runes, I Ching, biorhythms, and more. It's easy to spend hours there!
Learntarot.com - This is one of the main sites I used to learn Tarot, and it's still one of the most comprehensive sets of free beginner lessons I know. Joan Bunning provides helpful exercises, great insight, and useful sets of keywords for each card. The only problem with this and any Tarot site is it's easy to get caught up in one author's version of keywords, and not explore the full complexity of what the Tarot has to offer. Make sure you keep things diverse!
Masqued Man's Tarot Bible - Sadly there isn't really a hub page for this awesome resource, so I've got to start you with his page for the Magician. But this site shows comparative images from hundreds of different Tarot decks, spread across the entire deck. It's great for looking before you buy, and also for comparing different ideas and symbols across the various decks, deepening your understanding of each card. (I have to confess, I'm not sure how copyright works for the images this site uses, or if it does. So if that worries you, by all means, don't visit. But it's out there, it's free, and I've found its resources make me a better reader - and more likely to buy a deck because I know I'm going to love it.)
Tarotguild.com - The Tarot Guild is the best site for Tarot professionals I know. It has tons of great podcasts, classes, and resources for both students who want to learn, and professional readers who want a boost in their businesses. There are classes exclusively on social media, which is a huge part of online Tarot these days, and there's an Endorsed Readers Program where you can work for the guild in providing readings for pay. It's taught me so much in the time I've been a member, and while there's a fee for membership, it's very reasonable. And the podcasts are all free!
Sorry I'm not really tackling individual readers here, but I wanted to keep this as more of a learning resource. What are some of your favorite Tarot sites out there? And yes, you're free to link to your own!