Not one anymore, but was one for a long time.
Yes, there are rules on hair/clothes etc. men have to have short hair, no beard. No extreme haircuts allowed. Women used to be forbidden from having a bob hair cut or short hair, but that's not the case anymore. Clothes must always be modest, you are expected to be smart especially when in the Kingdom Hall etc. or out on the preaching work. Women have to wear skirts for this, men and boys, suits and ties. If women are doing the teaching when their is a qualified brother around, they have to cover their hair.
Most witnesses get married because any kind of sexual contact outside of marriage would lead to disciplining and then disfellowshipping. JW's don't date as such; they socialise in groups and only start dating if they have the intention of marrying. Unmarried couples have to be chaperoned, they shouldn't spend time alone in a private place. Also, they shouldn't date/fellowship with people outside the Witnesses.
You're not really allowed to be friends with people who aren't witnesses. Bad associations spoil useful habits and socialising with "worldly" people is a bad thing because it can lead you away from The Truth and towards the world which is ruled by Satan.
In my day, the men were called Brother Surname and the women were called Sister 1st name unless they were older women who got last names as a mark of respect.
No, they are not allowed to read/listen to religious material of any kind not produced by their organisation. The WBTS also advises very strongly on the types of material that are suitable for reading or listening to - so most modern music is unsuitable, tv/film media that contains sex, violence, swearing, blasphemy, magic etc. is unsuitable, same with books and the like - so no Harry Potter or Belgariad or similar. Also anything that has an even slightly religious stance that is part of false religion (anyone except JWs.) You most certainly can't listen to/sing hymns or sacred music - the Devil has the best hymns.
Divorce is frowned on, except in the case of adultery. If you divorce without adultery,you are not free to remarry.
No, you wouldn't be seen as "damaged" because you would have repented and turned your back on your former life. You would have brought your life into line with Jehovah's will. BUT, it would be some time before you had proven that you were strong enough in the truth before you would be considered a suitable partner,
Interestingly, something like 63% of people born into JWs, leave the religion when they are old enough to make their own minds up.
Hope this helps a bit.