Embajada de Grecia en Hanoi

I need this information
Hello, My Name is Karelia Costalas Mendez. I am Cuban but I am a singer/dancer working in Ho Cho Min City in Vietnam. As I stated I am Cuban but am I am wondering what documents I will need in order to apply for a tourist visa for Greece. My boyfriends family is traveling to Greece in August and they have their tickets booked already. I currently am living in Ho Cho Min City and from what I understand the Greek embessay is in Hanoi. I need to know all the documents I need and if I can obtain the applications forms on the internet because it costs money in order to fly from Ho Cho Min City to Hanoi and I only want to do this once the correct way and not have any documents missing for when I come into the office to drop my documents off. I would like to try and apply for the Greek tourist VISA as soon as possible so I can book a ticket ahead of time for a cheaper price. As I said my boyfriend and his family will be in Greece and his side of the family in Greece would like to get to know me and spend time together. I have been invited to stay at his Uncles house which will not be a problem to obtain a Invitation letter if this is needed. Can you please tell me what other documents I need?Thank You for Your Time and Consideration