Yes a bachelors degree or equivalent is generally necessary to obtain a H1B visa. Best of Luck!

Does applying for TPS impacts the visa procedure of my wife? She is still in Nepal, and planning to apply after December?

Yes it will have an impact. It would make it questionable whether your wife plans to enter the US temporarily. Best of Luck!

Nope that shouldn't be an issue. Best of Luck!

H-1B visa expired on 30th Sep'2015. Extension was filed and received RFE. Is it possible to make a switch now?

Yes the new employer can petition for you. Just make sure the extension was filed timely. Best of Luck!

When filling in Form N-600 , Part 2, Question 16 C , do we check off "Permanent Resident" or do we check "Other"

US citizen would be the best bet. Best of Luck!

What is the best time to file PERM application

I would file it as soon as possible. Best of Luck!

Can a green card holder apply for a reentry permit from abroad?

Nope. You must be in the U.S when you apply and get printed. Best of Luck!

I heard that filing assylum from california has more sucesss rate especially sanfrancisco.is it true?

I've never heard that California has a greater success rate? This is news to me? The second question I have a much better answer for. If you win...

Regarding Knowing of Exact EB-2 Priority Date

I would recommend speaking to your employer's immigration attorney. They should be able to answer all these questions. As for your driver license...

Change in visa status.. Is it possible to process F-1 to H-4 conversion and H4 EAD at the same time!!

Yes and yes. You can file for both an H-4 and EAD at the same time. However, its not possible to tell you how long it will take. That would depend...