So yeah I found it really scarey to drive for the first time, its really peppy down low and jerky as some others have described it, and because its all so new I'm worried of panicking and forgeting to brake, or sometimes when your arm is stiff when you start accelerating sometimes the acceleration causes you to kinda keep accelerating..
Hello and welcome to this forum
I had to take a *deep* breath after I read your post, and thought a little about how to address some of your topics...
First off, congrats on taking up motorcycling. With proper preparation, thought, planning and practice, you can have plenty of years of enjoyment ahead of you.
I suspect there will be a slew of replies from other members as to whether the RC390 is appropriate for your first bike, but then again, you've already bought it, so .. for the sake of your own safety and to others, just a few token suggestions:
Take small steps. Baby steps for now.
This might sound corny to you, but google up some youtube videos on motorcycle safety riding techniques....I'm sure you'll pick up some very valuable pointers
Make sure you have all your protective clothing
Start riding only in the dry....for now.
Find an empty parking lot NEARBY...if not possible, then go out early in the morning on weekends, when traffic is at its lightest.
Stick only to your neighborhood.
Stay away from main highways and arteries until you get comfortable in the very basics such as:
throttle control
your riding posture on a supersport bike and how you rest your weight on your wrists
your braking technique
your vision
clutch control
There's just so much more to motorcycle safety and proper technique....
I'm not trying to lecture you; it's just that your first experience on a bike was ... well let's just say, very concerning.
It's sad that the dealer even let a new learner ride off with a new purchase - in the rain.
It could have been a disaster.
Glad you made it back safely.