I heard from someone that if you want to earn money without any investment then you should go to bitcointalk. But he also told me to keep alert. I created an account. I am feeling very confused but I am not able to understand anything.
It is funny that you just heard from someone that you can make money from Bitcointalk without investment, and you rushed to open an account without meeting the person to explain better how and in which ways you can make money from the forum without investing. Now you are here saying you are confused.
If you had asked the person to introduce the way to you, you might have found it easier. As you are here now, you may may know your target. It is true that someone can make money in this forum without investment, but you must have something to offer first. This means you need to do some tasks before you can get paid.
With this account, I don’t think anyone will give you any tasks to do. You need to calm down, understand the rules and regulations of this forum, and also take time to learn one or two things.