I couldn't say any one thing has served me well. The lessons I...

I couldn't say any one thing has served me well. The lessons I constantly repeat are;

1: Learn structure. Understand patterns in depth and more importantly how things are connected to each other.

2: Learn detail, very small formations such as a 3 bar reversal or NR7 are very important at certain times.

3: Learn Volume. That's a huge one. A good understanding of volume will get you miles in front.

4: Get good software. Most of the free internet software out there is absolute garbage.

5: Ignore indicators. That isn't what TA is about. A good TA will be able to look at a chart and tell you pretty much what an indicator would look like. Data leads, indicators trail, always. Indicators will only ever cloud things.

Elliott theory is good on structure, Dinapolli is very good on Fibonacci which is very good for management.

If you genuinely want to learn, do so knowing that learning ta is a big deal, it will take you many many years before you really start to understand a chart, and will cost you many thousands for things you'll probably never use.