Do you have some good experience with some bots?
Nope
Could you kindly recommend me some?
here at bitcointalk there are some, but you should ask yourself:
if the bots are very good, why would bot creators sell their bots?
Are there some fully automatic trading bots that are trading and earning without any knowledge?
I do not see people posting their profits from trade made by their bots, so it's very hard to know, but I've seen a lot of people complaining about bots
And what about signals?
do not believe it, this would be a big mistake and waste of time and money
I thought someone here, who is selling signals from 400 channels.
do not buy
learn on yourself, but I have heard that you have to learn about 3-4 years before you start trading. 
Dude, practice with small amounts and watch videos on youtube about trade