Once you've made a third post you can attach pics and it'll be easier to give you advice.
The button on the left is the primer, the lever is the choke. If you're curious about what the lever does, check the pics I posted in http://motorbicycling.com/showthread.php?t=34764
this thread If the fuel line isn't in great shape, you might want to get a new piece before you try it, in case you have to replace it. It should pull off at the carb, but if it's old line it'll probably split or crack when you pull it off.
There's a link to a video around here someone posted a while ago of his ride around the park. What struck me most about it was listening to the way the engine was used through the course. It's hard to explain right now, but it's a good guide on when to grab the clutch lever for turns and when to let it out again. I'll see if I can find it.
I have had bad luck being powered through a turn once (and a few close calls), so I always grab the lever and coast/brake into turns and use the motor to pull out of them. The higher the speed, the wider the arc you're going to make.
I live in Van, and (for now) work in Richmond. I ride every day that I can for work. The fuel savings alone has more than paid for the motor. I will take the car when I have to, or need to, but any day that starts with a ride is already a better day, no matter what happens after that.
I spent a couple of weeks in Edmonton, and decided it wasn't the place for me. I was there in August, and it was barely shirtsleeves-warm (for me), around 20 C/68 F. The guys I was overseeing were complaining of the heat, and I'd finally taken my jacket off. Where I lived before I moved out here, it wasn't unusual for the temp to hit 38-40 C/100-104 F with 100% humidity some days in August. I'm not a fan of the rainy season here, but from March through October it's a good place to be.