Exactly what @taskmaster4450le said, and also think about everything you do here as being visible by everyone in the world… so whenever you want to say something thinking it will not be seen… it is being seen, remember. And forever!
Also, another way to learn here is to read other’s comments and learn from the message (not just reply, that’s the least important part). If you then have something you think it would add value or is just your opinion, then I would highly encourage your reply.
Remember, we are humans.