As was stated, it is personal preference as to what to do. I have only had one person other than myself ever see my genitals, and that was about 2 years before I started trimming. I first tried shaving completely but found that uncomfortable. Then, using a beard trimmer, I started trimming starting with a longer trim setting trimming my way down every week until I hit an uncomfortable length again. Finding the setting I prefer to use was my biggest factor in continuing to groom the genitals. However, finding the right "technique" will depend solely on you. I will say that I found, when shaving to the skin, it really helped for me to pull all the skin as tight as possible while shaving so that I didn't nick myself. (
Although no one would have been able to see it, I would have felt pretty silly walking around with a little piece of toilet paper stuck to my balls to stop the bleeding of a nick.
) I hope this helps some.