Is there something I can use for a guide to change my oil on a 2005 GTI

Just bought it and aside from my oil light going on it seems to smoke at start up like it's running to rich. I am worried the oil I put in is bad. It was not seadoo brand. The oil light made me panic so I added oil. It was 2 cycle, non tcw-3. The label said it would work for XP/AP or whatever it was.

Anyway, I would like to drain it and add new oil. What's the best way to do this??? Do you think my engine will be ok not using Seadoo oil!???