At one time in my old area the Red Cross offered canoe safety coruses. If you are inexperienced I would suggest that you try to find one and take it. Another possibility is a club. I belonged to one for several years back in New York and they did group outtings. The trips were rated, whitewater, flat, whatever..... So you knew what you were getting into.
I took ten Boy Scouts on a trip that had no experience. So I contacted the local high school, reserved the pool and most of the winter did merit badges involving swimming and canoeing. By the time we went on the trip the kids knew how to paddle, (maybe not in a straight line!), what to do in a rollover and basic water safety. The trip actually was a great time once they learned to go straight. I think the first day we did 12 miles and some boys did 21 all in curves.
Packing everything so it is water proff is a must. There are many suppliers of waterproff bags out there and you also have the old standby of the heavy duty trash bag.
I would also start with well know, flat water, short trips. One night out in a fairly well traveled area. NOT, an area with a lot of motor boats tough. Waves form motor boats are not easy for the beginner.
+++++Remember to always leave a float plan with someone. +++++
How long of trip, return time, who is going, from where to where. If I am out and about Prince William Sound in my boat I always leave a float plan and call the Coast Guard if I deviate form the plan so that they can inform the harbor master of my changes.
The internet is also another source of information. Lots of camping groups and canoe clubs on the internet.
Anything else?