Updated Dec 2015
I added the first 5 for other people who asked me
These posts have been on this page a long time, some since I started trading.
I started reading some of the posts from 2013
These are some things I found when I started trying to understand a bit more than candlesticks, trend lines, moving averages and started examining volume and delta:
jigsawtrading – understanding liquidity and market structure – very highly recommended, some aha moments for me reading this one.
Some pdfs for people starting out, wykckoff stuff is really good for understanding what the market is doing: