Yes, a hybrid or a 3 speed (you say you don't like too many gears, but have you got hills on you way to town? gears would help) should suit you. Also, a more helpful partner
To get used to roads and traffic, I suggest getting out very early one weekend, do the route to town at 6am on a Sunday. This will give you confidence plus the chance to get to know your way when there's hardly anybody about.
Riding on canal paths is actually easier, no motorized traffic, you should start there, maybe walk the bike to the path first if you are not confident of riding it on the open road yet.
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