Increase the validity of my L1B visa

Your status appears to have ended on Aug 2013?

How much an immigration attorney cost would be to complete the citizenship application process.

I'd suggest to work with a local attorney so that if need be he/ she can accompany you to the interview.

I-539 clarification

If these basic questions on the form are confusing you, you should retain an attorney to go through the application with you. The more relevant...

What is the effect on incumbent visa (L1) when you apply for H1 ?

Denial of H-1B does not necessarily impact your current L-1 status

Yes.

H1B Stamped, expires in a month, yet to travel to US with it. Can I travel in H4 and then convert to H1B even if H1 expires?

Do not play around alternative visas when the intention is to come to the U.S. to work. You cannot dodge the H-1B visa interview. I have seen...

H1b transfer initial review, can i work after Oct1

You can join Employer B (with pending petition) after October 1, if you worked for Employer A and wish to port. You cannot work with Employer B on...

Can i transfer approved h1b before oct 1'st without i797 copy? know only petition number.

Employer Y can file a petition in your behalf with start date of Oct 1.

What is the minimum amount of time that a H1B Visa can be used?

There is no minimum time however the filing fees for H-1B petition are high and so the company may want to re-visit short-term employment duration....

My emoyment authorization card expires in 3 months.i have not been working can I file for a new card? Or renewal ?

I'd encourage you to seek an extension as it takes 90 days for USCIS to issue you one. If the current one expires and you are offered a job, you...