I have to start to read many pages then... i have to study this bot how it works..
If you buy the bot now, you get access to a support group on Telegram. That should speed up the learning process. Additionally, you should register and start using the official Gunbot forum:
https://gunthy.org/index.php.
You buy the bot with one exchange, which is 0.1 BTC. Any other license costs 0.05 BTC. So if you want to have all 3 exchanges, you have to pay 0.2 BTC.
No. That pricing is no longer valid. It is 0.1 BTC per exchange, there is no more discount on secondary licences. If you buy for all 4 exchanges it will cost 0.4 BTC or 0.36 BTC if you use a discount code.