Although this site is mainly about food and wine pairing we aim to share a bit of knowhow about wine too.
There are two sections which you may find useful depending on your existing level of knowledge:
Wine Basics is - as the name suggests - about the basic stuff you need to know to enjoy wine at its best: how to buy it, how long to store it, how to serve it and how to navigate your way around a wine list as well as a useful Beginner's Guide to Pairing Food and Wine.
And Wine Pros, which is mainly designed for people who work in the trade and keen amateurs, focusses on the geekier aspects of wine and people who work in wine. You may enjoy posts such as How I Became a Winemaker and So you Want to be a Sommelier as well as posts on the more technical aspects of wine pairing such as Using Bridge Ingredients to Create the Perfect Match.
(If you enjoy this content, by the way, you may also enjoy my podcast Bâtonnage which I record with Master of Wine Liam Steevenson.)