I really need some help with documents required for a spouse visa for my wife coming from Brazil.
Quick history - I am British and she is Brazilian, we met while I was living and working in Brazil in Feb 2008. We have lived together since the end of 2008 although we never had any joint bills and I spent some time in England. We have a son born in Brazil 02/10/09 at the moment he has a Brazilian passport. My work ran out and I had to come back to Britain in order to find a job. Once I had a job and 2 bedroom flat they both came over on a tourist visa and stayed for 5 months, in those 5 months we got married and I now want to apply for a spouse visa for her.
I don't earn much money but it is just enough after rent to meet the required amount I believe.
What docs does my wife need to provide for her visa and which ones need to be certified

Thanks