I'm still not clear on what the differences between single and double action. I'm thinking that single action is that you just pull the trigger? Double action is that you can cock t if you want, or pull the trigger in one action?
T'other way around, it refers to the functionality of the trigger. Single action only releases the sear allowing the hammer to fall and strike like in the old cowboy movies. With double action the trigger also moves the hammer back and rotates the cylinder to align a new (hopefully loaded) chamber and also releases the sear. Some revolvers have shrouded hammers to ease draw from concealement and then you can consider them only double-action. That might be preferable for a beginner because there's less to think about and although the trigger pull is heavier than single action, it is the same for each shot.
There were some self-cocking revolvers once so that each shot was single-action without cocking, but they were used long ago by marksman when the natives didn't like it up 'em. Not relevant today.
Get training because waving a gun around in fear isn't going to help you.
I prefer a Wakasashi myself. It's quieter, relies on gross-motor skills and I don't have to reload it.