No transactions are showing on my Blockchain page
If you had money in the wallet, and it was sent out of the wallet (not by you), then it sounds like the wallet is compromised. Do not use it anymore. You can easily create a new one, but be mindful of security. 

Receiving a payment is as simple as sharing one of your wallet's addresses with the person paying you. Once they send a transaction it will automatically show in your wallet, you don't need to do anything else for it to work.