Got $300 as a bonus at an online casino.

Hello, dear friends!
I want your advice. There's a bonus for online casinos. I don't know how to make the best use of it.
I got my bonus here:Bonus
What's your advice? What is the best slot to play where the chances of winning are higher?
I want your advice. There's a bonus for online casinos. I don't know how to make the best use of it.
I got my bonus here:Bonus
What's your advice? What is the best slot to play where the chances of winning are higher?