Sounds as if someone didn't do any research! If you dry shave, don't moisturise or exfoliate it is very common to get ingrown hairs in the pubic region. You need to
1) Take a long, hot bath. This will soften the course hairs and allow for easier removal.
2) Use a mild shaving creme or gel designed for use down there. Don't just slap any old one on or you could be hopping around the room in pain.
3) Shave (with a fresh, sharp razor) in the direction of hair growth. Avoid constantly running the razor oveer the same area because this will irritate the skin. Try and shave an area in 2 or 3 short strokes.
4) Clean and then gently exfoliate your skin with a sponge or soft loofah to remove anything clogging the pores.
5) Moisturise, moisturise, moisturise. My personal favorite is Johnsons Baby Oil with Aloe Vera & Vitamin E (green capped bottle).
6) Continue to wash & moisturise your pubic region every day. It helps remove oils and sweat and makes it much less likely to get clogged pores and ingrown hairs.
Another thing which I found when I first started shaving is that first timers will often get a few itchy, red bumps because the skin there is sensitive and needs times to adjust to being shaved. Shaving once a week is enough for your first month. You may think that re-shaving and keeping the hair super short will prevent ingrown hairs, but the best way is to exfoliate, moisturise and take the time to shave properly.