1. Where is the oldest casino in the world? 

It is in Venice, Italy

2. Name of oldest operating gambling casino in the world? 

Casino di Venezia 

3. How many casinos are operating in the world ?

It estimates round about to 5,700 to 6000.

5. When the First Casino was established and where? 

In 1638.  Venice, Italy

5. How many casinos are operatubg in the world?

Round about to 5,600 Casinos.

6. Can you name the best casino that teaches how to play poker, slots, craps? 

Yes there are many. Many casinos give free gambling techniques and lessons online and at house.

7. Please name the best place to play Blackjack in Atlantic City? 

I personally thinks about "The Claridge" i think it is the best.

8. Name the best casino in Las Vegas to play Spanish 21? 

One and only "The Venetian".