General information about Cuba shows information such as telecommunications and kilometric distances between cities
Until recently, if you wanted to connect to the internet, you had to go to a hotel and connect to a desktop computer. It was charged for time.
Now, in addition, you have the option of buying a Wi-Fi card that costs 1 CUC per hour, if you buy it at ETECSA, which is the Cuban telecommunications company.
Keep in mind that the connection is not like in Spain. To be able to connect you will have to go to a hotel or plaza and activate the wifi. When you finish disconnect it so it does not keep running time.