one practical tip for anyone tempted by a paid indicator: demand a measurable claim and a way to test it on demo first. if the seller cant give you a falsifiable statement and a trial, thats your answer. real tools survive scrutiny, marketing dies under it.
70 and 30 are the textbook levels but in a strong trend rsi can sit above 70 for ages while price keeps rising, so dont treat it as an automatic reversal. use it as context, not a trigger: high daily rsi means be more selective with new longs, not 'short here'. the level is a caution light, not a stop sign.
learn price first. but do pay attention to which session youre trading even without a fancy indicator, just glance at the time. trading the dead asian session with a london-breakout mentality is a classic beginner mismatch. you dont need the box, you need the awareness it represents.