My son is 22 and just got his 3rd dui. we live in calif. how much jail like is he looking at

Heed mr. Murillo's advice and hire a lawyer ASAP and request a DMV hearing in a timely fashion.

Threatened with a 3 day pay or quit notice, after I asked Landlord to use security deposit as last month rent.

They do not need to agree to apply security deposit to last month's rent.

Can i be serverd with a 3 day notice for not paying full amount of rent even if they have my last months rent.

Yes

you count based on regular days.

I pre paid a photographer for a photo session I can no longer take. How can I get my money back?

You may be stuck if you agreed to the non refundable clause. You need a lawyer to review your contract. Good luck.

Can an attorney represent a Corporation as well as the individuals in the corporation?

They probably can.

What can i file if i was mailed a request for entry of default judgement against me in a ud case i was never served summon compl

You need to hire a lawyer to seek a stay of any eviction and file a motion to vacate the default and default judgment on shortened time.

Do I need an attorney for a possession of marijuana charge?

Yes.

Unlawful Detainer: Submit original complaint with original signature?

It needs to be an original signature.

Im beign charged for a misdemeaner battery domestic charge,no injuries should I hire a lawyer or represent myself?

Definitely.