I've only been on the river the last few years, but been in an outboard all my life. I tried to read as much as I could online about reading the river but not a lot of information out there. "How to read and run a river" is a great book and felt it gave me a lot of practical information. Explorer in Edmonton has some copies last time I was there.
Depending on your confidence and risk tolerance you could start on the lake then move to the river, but I believe in jumping straight into the fire haha.
Check Google maps for your route, check the average depths and flow on the alberta web site (
https://rivers.alberta.ca/), have the proper gear (recovery, safety, etc.) then get out there and learn how to read the water.
Start in the deeper channel then when confident start moving closer to the shallow sections, then plan routes through the shallows that challenges your maneuvering skills. I do this every time I'm out to push myself to be better, not because I race or have a death wish, but to have the skills and confidence when things get hairy on the river. There will be times you pick the wrong channel and need the skill to push through or whip a 180 before the point of no return.
Some of my rules: Always assume the river has changed, head on a swivel and look 100m+ ahead, everyone wares a PFD, gear/fuel check before trip, passengers are well aware the boat may suddenly change direction or speed because of obstacles, if on a new river or unaware of downstream exits go up river, if in doubt keep momentum up, and of course no drugs/alcohol.
Overall I found the best way to learn is to get out there and start boating. I'll be on the NSR as soon as the launch opens.