Is there any attorney who has already experience of working with Afghan asylum seeker?

I would suggest that instead you try to find an attorney with experience in asylum law. Any attorney can get information about Afghanistan.

Form filling

If you sent a G-325A to the National Visa Center, then you did indeed send an incorrect form. You can call them to ask if they received it, but it...

Will USCIS deny my adjustment of status because of a past ticket i received for "fighting"? It stemmed from discharging a gun.

Probably not, since you were not convicted on that charge.

USC + nonUSC partner: Must we remain in US after filing I-130? We both need to work.

As long has he does not overstay his U.S. admission, that should be fine. If you move to Holland, there is an issue of U.S. domicile for your...

Since you never filed to adjust, your unlawful presence starts when your OPT ended [unless you were admitted for duration of status], or engaged in...

Is there a difference between marrying abroad or in the US (L1 visa holder marriage to greencard holder)

No.

My boyfriend came from Cuba with an RE6 category (Refugee Status), will I be able to adjust status through the Cuban Adjustment

Yes.

I need a copy of 1040 can I transfer all the information on new form and keep it as a copy ?

Send a copy and also send your transcripts, which you can order at IRS.GOV

What does it mean when the BIA reverse the decision of denied I-130 Petition? What are the necessary actions to be taken?

It means USCIS denied the visa, and the Board did not agree with them and they took away the denial and sent the visa back to USCIS. You should be...

Is my US citizen wife considered to have maintained her US domicile for the purpose of filing Form I-864?

No. She has to have definite plans to return to the U.S. to live there.