Getting started -
Technical analysis has probably been approached from as many different angles as any discipline I've ever endeavored to learn.
Perhaps I should start by saying that not all indicators are effective all of the time for all people.
Remember the movie "Runaway Bride"? Maggie Carpenter ran, not because she didn't know the fellow she was to marry, but because he didn't know her. Maggie knew that because she didn't know herself! Finally, Ike (Richard Gere) pointed out to her that she didn't even know how she liked her eggs.
Eggs are an interesting food. You can fry them, boil them, poach them, or make an omelet. And everyone likes their eggs differently. Sunny side up or over hard, with salt and pepper or tabasco sauce. Dr Zeus likes his green and with ham!
Technical analysis is much the same. You have to find what works for you. We will spend a considerable amount of time talking about indicators. What they measure, and how they are configured. But in the final analysis, each trader has to decide for himself how he likes his eggs.
I have relationships with several successful traders. Each of them uses a slightly different approach, not only to the indicators they prefer, but to the style of trading that they employ. Traders have different risk tolerances, venture different amounts of capital, and trade everything from stocks to commodities, and from big boards to sub-pennies.
Technical anaylsis will work for all styles and vehicles, but you have to find your own path. No one can tell you how you like your eggs.