Most TA is hoodoo voodoo nonsense. I draw 1 trendline if I can, because there is only ever one trend, and I mark support/resistance levels. Support/resistance is just the assumption that if somebody showed up before to sell at a certain level, they (or somebody else) might do it again if price advertises that level again. You can see from this chart that price action reacted to the levels I marked more often than not.