I've been shaving my junk for years, for lots of reasons. 1) Summer months, it is infinitely more comfortable. 2) It looks a whole lot better. It used to look like a baby eagle in a birds nest. 3) I started fairly early, late teens - I've never had a lady disappointed or turned off by it, they've all complimented and appreciated the extra effort.
Some guidelines:
1. Once you start, you better be committed for long term. Trying to let the hair grow back is bothersome to say the least.
2. Don't shave it all off, leave a little on the top as they say. After all you are a man, not a boy. Unless you are specifically after the "Ken" look, comparable to the "Barbie" that the ladies do.
What works for me?
I have never been a hairy guy, facial or body hair. I only have to shave the junk once every week for comfort. I use regular soap, lather the junk up and pull out the disposable razors. I wouldn't use the same one on my junk and then my face. Pull your sack and start the shaving strokes, take care on the underside of your willie, it's an awkward area and I usually don't spend a lot of time there. You can do your "taint" and beyond, but I find that is the first area you'll notice the itch as the hair comes back. Once all is said and done, dry and throw some baby powder/talc on it.
Or you can buy "freshballs" if summer discomfort is your problem.
The number one reason I trim though? It makes your junk look bigger, that's what I had heard years ago...now I look like I'm hung like a fruit fly, a big improvement for me.
Regards.