Immigration problem with civil history

Think bankruptcy as it will discharge your debts unless you committed fraud. A civil court judge cannot impose restrictions on your ability to leave.

I recommend the following courses: Spanish, Logic, World Literature, Geography, Political Science (but not a PC BS variety), World History. After...

Will I have trouble at port of entry?

If you have a valid F-1 Visa you should have no problem. Port of entry is irrelevant. Question is - do you have a valid visa and did you in any...

H1B Approved cannot join employer due to health reasons

It should not have any negative effect provided your employer is made aware of it in writing.

I485 finally got my green card but there is an error

File I-90 immediately. It may take several months.

Establishing Corporation by F-1 student status visa holder in USA

yes, you can but you cannot be employed by it. A presumption may arise that you are employed. You have to consult a lawyer who will guide you.

How to proceed with priority date being current once more?

It's impossible without knowing more to give you advice. As a precaution why don't you extend your H-1B status. Just in case.

You have to retain a new lawyer. Immediately! It looks like your lawyer is blackmailing you. What a shame!

I got a letter from Immigration I have to come to Immigration Court because I am a permanent resident that sold twice, and

The crimes you have listed are more than enough to trigger deportation with a loss of permanent resident status. retain a good lawyer in your area...

Can I marry and file for my fiance in the US when he visits here from another country?

No and no. You can only file a petition for a K-1 visa when your fiancee is abroad. Once she comes here on a K-1 Visa you have to get married...