Your best bet for learning on site is to take part in a coven. Post any questions you have, read through the forums and try to actively engage those in your coven in a chat about magic, or listen when they are discussing a topic.
There are a plethora of books and pdf's you can get online. I highly suggest the works of Scott Cunningham.
Be careful to double and triple check any information you read, from various sources. Not all books nor people are factual, especially in regards to magic.