I am totally new to this, I live in Vancouver BC and I am interested to see how the tax liens works, especially in the florida state. I have participated in tax liens here in BC but I know every place is different. So my first question will be what do I have to do to be able to participate in an online tax lien. I know they require a SIN or a business "SIN" number. I also have a personal SIN that I got long time ago as a visitor in the USA. I am also wondering if that one will work for that purpose.