L-1 Visa canadian working in US to marry US citizen!

Hi
I am hoping that someone can give me some info...I am a Canadian citizen working in the US on a L1 visa. My boyfriend of the past 4 years and i have decided to get married. He is a US citizen and we plan on having our wedding here. What steps do I need to take to get the paper work started? how long does it take for an adjustment of status to process? there is just sooo much info out there! any advice would be appreciated!
thanks

GO HERE http://www.visajourney.com

It's a standard AOS, I-485, I-864, I-765, G-325A etc. How long depends on how many mistakes you make in filling out the paperwork and which service centre is processing it. Like Reba said, check out visajourney.