Forums like this and Reddit are really good, especially is you have specific questions to ask. Otherwise you tube is the best place, people like cryptolark, jsnip4, clif high, bix weir have been helpful to me. I'd be wary of articles that come up in search engines as these tend to be from the popular press side of cryptocurrencies, cointelegraph etc. And they won't give you the most objective view point.
Exactly but for me forums, articles and google is the best sources of information on bitcoin. In forums has lot of threads about bitcoin and cryptocurrency. In articles, they create to share their knowledges and some news about cryptocurrencies..while in google has lot of information to share and researching for knowledges.