Here are some of the websites & tools I use on a daily basis, plus free downloads for wine students:

Youtube PLAYLISTS FOR WINE STUDENTS

WINE & SPIRIT REGIONAL WEBSITES

FREE DIPLOMA PREP CHECKLIST

Download my free PDF checklist, with tips for preparing and success in the WSET Diploma program (I share my book list, trade websites, and study tips).

APPELLATION UPDATES

A running list of updates to various wine appellations.

Wine-searcher pro

If you've asked me to find a particular bottle of wine in a store near you, this is where I go first. It's a great resource for starting wine research on producers & their wines. There's a free version and a paid Pro version. 

jancisrobinson.com

I'm a paid subscriber to Jancis' site. It's got some of the best wine writing on the web, plus online access to the Oxford Companion to Wine, and World Atlas of Wine. WSET students can access a discounted first year coupon via the WSET Global portal.