Online stock market index trend chart, Chinese stock market index trend chart, _ Little Discoveries Q&A Network

Where can I learn to read K-line charts well, such as the link http://www.jxwz8.net/zidao/html/l9b75c9qb.shtm? What do the different components like bearish lines, bullish lines, upper shadows, and lower shadows mean... For example, a large bullish line on the market index may involve very complex internal changes, such as a general rise or the influence of heavyweight stocks...