Kayaks are awesome! You'll love it. Stick to calm waters your first several times out (kinda good advice for life in general -- calm waters). Let us know how it goes. :)
That is my plan as soon as I can to get myself onboard a kayak. They are so easy to navigate waters with. It's all about balance. Feel how the kayak moves while you paddle and responds to the flow of the water. If you learn this quickly and while it depends on the waters, as I have only kayaked on calm lake waters, it becomes very fluid and natural.
If you want to experience the feel of the lake or river even with my limited time on one there is nothing like it. It'll balm you with calmness if you let it.... with calm waters