First step is to register on Fonoma with an email and password or even easier via Facebook or Google account:
Once registered, enter the cell phone number you wish to recharge, choose the amount and click on "Send Recharge", as easy as that;
The next step is to provide your payment information: PayPal credentials or credit or debit card details.
Then, click on Pay!
When "your recharge is on its way", you can choose the free option "Send SMS" to the person in Cuba.