Question about green card through marriage - worked illegally but paid taxes, do I have to disclose that I worked illegally?

Your attorney is telling you to commit fraud. Run away and find another attorney.

Will the visa processing be delayed for I-130 since the government has shut down?

While they are still issuing visas, it may be delayed but not significantly.

F-1 student visa, should I return to my country for the immigrant visa interview with family or stay in the US and file I-485?

Assuming you are in status, then yes you can file for adjustment based on the approved petition with a current priority date.

Not as an O visa holder but if you were able to COS to an E2, assuming you were eligible, then you could.

My wife and me came to US under DV lottery 2013, and paid the immigration fee on JULY 5 2013, but we didn't get the green card ?

You can always call the customer service line or make an infopass appointment with USCIS.

I am a Ghanaian. I tried applying for the opened 2015 DV-Lottery Program but I receive a response that my country is not legible

Odd, perhaps it is due to the shutdown or the server is experience difficulties. I know it is a silly question, but are you sure you entered in...

H1b visa transfer

Are you outside the US? Nevertheless, I agree with my colleagues that you need to retain counsel quick if you are still state side.

My husband and I sent the Petition I-30 but forgot to add the filing fee. What do we do know in order to get the money in?

Wait. You cannot take payment to the local field office.

I called to USCIS to know my Status and this is WHAT they mailed me in Next day . So what this mean ??? ( I 485 )

Yes, most likely a second interview.

Will it complicate the process of making my wife-to-be a legal US citizen if she changes her name at marriage?

No, it will not. You will just need to include all prior names used in the petition and applications.