My husband abandon me 3 weeks after he received his resident card is he able to bring family members with out knowing still marr

What family members? He can apply for children but that is about it.

Will my spouse lose his conditional green card if i divorce him after a year of marriage?

Divorce is different from immigration. He may lose his residency, then again he may not. I think you need to speak to a divorce attorney right away.

Am I able to hold TN visa status for one job in the US and now apply for OPT status to take another part time job?

You do not qualify for opt unless you have a F-1 visa. My answer is no.

I just turn 18 and i dont work can i apply for a k1 visa for my girlfriend will i get denied?

I have no idea if the case would be approved but she would not be able to obtain the visa in the US.

I entered on K-1 and married within the 90 days. I never filed to adjust and got a divorce.

You will definitely run into some trouble for sure. However, if I were you I would take a shot at it.

I am U.S. citizen, I want to apply for my brother to get his green card, he lives outside of US, he is married and has children,

You can apply for your brother and in ten or more years the case will be ready. Any minor children can come along and usually the spouse gets to...

Can I file an N-400 and keep the Clock ticking even though I do NOT have a 1 year continous stay ?

If you are an LPR based on marriage to an American and have half of your time in the US, you may be eligible to file n-400.

Green Card Holder

A new green card holder is not able to. Your sponsor may have to repay these benefits if you take them.

No, your category is the way you became a resident. There is nothing to change.

I'm trying to find out what we could do about someone that came in to the US, their visa expired and received another identity.

Did you want to report this person to the immigration authorities or do you want to help this person stay here?