Is Biometric every time necessary when I apply for renewal of L2 based EAD?

Yes biometrics are required every time you file with USCIS.

You can look up that information online but really do not need to know the basis when you apply for citizenship. Just provide a copy of the card...

You can look online for a sample itinerary or you can actually create your own with real dates and events. It is just a list.

Can I apply for my green card and work permit and adjust my status with an expired passport

Go get a new passport and your troubles will be gone. You need a valid passport.

Am I going to have any trouble getting a IR-1 visa if I'm on Anti-depressants?

You should not have troubles with your visa because of anti-depressant medication.

Do I say I have been charged? Will it affect my citizenship application if it has been expunged?

Yes you must include charges even if they were expunged. There is also a question about expungment. You must be completely truthful in your answers.

It may take anywhere from a couple weeks to several months to get an interview at a consulate.

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Can the IR-1 interview take more than one day ?

That would be most unusual and I have never heard of such a lengthy interview. However, USCIS can always schedule a second interview in the future.

How can I extended a tourism visa which is valid 6 months, if it is done online please provide the website and any advice.

You cannot extend this visa online. You will have to file a form I-539 before your six months is over, requesting an extension.

You are correct. You answer which office you sent your previous application to and the approval date of that EAD.