One can Start with simple Patterns Identification , few are very easily identified , they are
W - a Pattern Looks Like W shape which is corrective in nature
N- a Pattern Looks Like N shape , which resemble strong (sharp) move on second Leg but actually they are an short term corrective move NON impulsive moves
Inverted Patterns of W and N , they are visually can be identified as Invested patterns when seen with the Correction
Again this post is Not Trade Recommendation its Just for Education purpose