It seems to me that non-Jews are hesitant to ask questions for a variety of reasons such as fear of giving offense or not knowing what questions to ask. A lot of Christians, for instance, are unaware of how different our two religions are.

I am suggesting that we start threads here on various subjects related to Judaism, discuss them both among ourselves and especially with any visitors who will join the discussion. 

Hi, Miasma

I forget what the stones one the grave signified.

The stone on the grave tradition symbolizes that someone has come to visit the grave and pay their respects to the departed.

 No tatoos the body is Gods temple except of course for concentration camp people.

Tatoos are not prohibited becayse the "body is God's temple" (that's actually a Christian doctrine). Rather, tatoos are prohibited simply because there is a commandment not to (Leviticus 19:28).

Tattoos are connected with pagan worship and originated as magical and religious symbols. For that reason, tattoos are forbidden to Jews because we are commanded to avoid anything connected with idolatry and pagan religions.

Is that somewhat what you are talking about.Why are no knots-shoelaces,women shaving hair and wearing wigs-Hassidic?Miasma

I don't know what you mean about no knots in shoelaces. Every Jew I know ties his shoelaces. That might be some strange custom in the ultraconservative sects, but I don't know.

Women shaving their heads and wearing wigs is a peculiar custom in ultraconservative sects. In those sects, a married woman is forbidden to have her uncovered in the presence of any man but her husband. Many women in these sects wear head scarves or hats, but some wear wigs -- and in order for the wig to sit right they shave their real hair off. That is not a mainstream Jewish practice.

The head shaving business is practiced only in certain Hasidic circles - mostly Hasidim of Hungarian origin. According to one minority view, hair can be considered a "barrier" between the body and the waters of the mikveh (ritual bath) used by married women for purification after their menstrual cycle. According to Jewish Law, there must be nothing intervening (e.g.: tangled and knotted hair, hangnails, adhesions, nail-polish, makeup, a cast, etc.) between the waters of the mikveh and the person immersing. Hence this peculiar custom. There may be other reasons as well.

Most orthodox women who wear wigs do not shave their heads. Before immersion, they wash their hair and comb it out.