Re: “…if I start riding and hate it” lol nobody hates riding motorcycles, it’s better than sex! …well almost;) Yes you will fall while learning from scratch, more likely in the first minutes or hours rather than weeks and months, because the more you ride the better you get at it.
Of course you do realize if learning to ride a motorcycle is the goal, by starting on a Dirt bike you could avoid a number of significant expenses like, bringing a beater bike up to road worthiness, vehicle certification, plates and insurance. Then once you can ride proficiently go out and buy and ride any bike you want with confidence.
…sorry, I had to point that out again guys.
With zero riding experience you should stay clear of 3 and 4 cylinder bikes totally. If you find a bike in nice shape, strip off the signals and mirrors before venturing out to your first parking lot. Find a friend to ride with, preferably with some experience or a desire to learn equal to yours.
If you must go straight to a road legal learner bike on a budget, one with cosmetic dents and scratches is the best deal, nobody is trying to sell a bike with a big dent in the tank for top dollar. What you don’t want is bent bars, controls and pegs, so if those are damaged, factor the replacement parts in to your purchase and replace them immediately. Bars are about 40-140$ depending on type and quality. Signal and brake lenses must be totally free of cracks to pass certification.
Start with the 500-1500 (or your budget limit) bikes, since you’re not great with a wrench you should stay away from fixer uppers, here are the key phrases and parameters you should watch for: runs good, ready to go, recently certified, single or 2 cylinder, 500cc or smaller.
In about 2 minutes on my regions free online classifieds I found some reasonable candidates;
8000 original kms on this 1981 Suzuki 400 GS. Recent carburator cleaning with new parts, new coil, runs like a top. Great beginner bike. Mechanically strong. $1000 obo.
9000km, 1978 400cc Hondamatic. This bike is a classic. 2 speed automatic, great for a starter bike. Was certified 2 yrs ago and hasn’t really gone anywhere. Needs some tlc. This bike was taken apart and put back together, new tire, brakes some cables. $1000 firm
1983 Honda CB 250, starts easily, runs good. Carb recently cleaned, new brakes front and back (still in box, not on bike). Very nice bike needs no work and very little care. Not sure the number of kilometers on it. 1000$
Hope this helps some, & do keep us posted with your progress