Well, being a woman, I'm not an expert on male health issues. But I will try to help you as best as I can, with information I've collected from medical courses etc.
I'll start with the acne- first of all, there's nothing wrong or abnormal about a young adult such as yourself, having acne problems.
You'll probably find that this will go away as you get older. Even older adults experience occasional break outs from time to time and there's unfortunately not a whole lot that you can do to guarantee that your acne will disappear.
What you can do, however, to reduce its appearance and to prevent it, is first to "clean yourself from the inside out", so to speak
It's no myth that eating plenty of fruits, vegetables and whole grains improves one's skin. This applies to men and women. Also, make sure that you wash your face, with a cleanser, regularly. There are skin cleansers that are destined for men, but if you can't find any, don't hesitate to go for a product that's maybe geared to women. I, personally, have never felt that there is anything wrong with men using so-called women's "beauty" products, but if this bothers you, and someone asks, you can always say that it's for a girlfriend or your sister
Some "gender neutral" brands of cleansing products include Nivea and Neutrogena, if these are available where you live.
At 17, I think you're a bit young yet to be thinking about sex. I don't mean this in a judgmental way, or, really that it's wrong for you to think about it- on the contrary, thinking about it provides you a chance to approach the situation with maturity and preparedness when the time comes. What I mean to say is that, at 17, your body is still developing. These "oddities" that you have described might well be a thing of the past by the time you are ready to engage in sexual activity. That you've not had sex yet is, I find, an admirable thing- don't rush yourself, for once you lose it, it's gone. (I don't mean to sound like a preacher or impose my beliefs on you; I just mean that your insecurities may go away, in time, and that you needn't worry too much ^_^)
As for the issue with the scrotum; maybe talk to your doctor about this. It likely isn't anything of concern, but your doctor may be able to better inform you about some of the issues you are having.
I hope this helps,