Can I sue my landlord for rent abatement after I move out??

Yes, it's possible to sue or ask for rent reduction. It also depends on your agreement with the landlord and how both parties acted during the 10...

You cannot waive all rights as a tenant even in a stip, so your landlord is probably misinterpreting what the waiver means. For example, you can't...

Will I have to pay back my ex landlord for unpaid rent eviction from December 2013?

If you were evicted, the judgment may have the amount owed. If there was no monetary award, you may still owe for the time you lived there, though...

How do you know if the termination if tennancy was legal?

Google "tenant landlord handbook California" and that book is online, then look for the section on termination of tenancy. It's a very good guide...

Can I break the 1 yr lease and sue for money back

That depends on more circumstances that you've listed here. Yes, it's possible to break the lease that quickly. Consult a tenant lawyer.

As tenant, can I force a landlord to be at the Unlawful Detainer trial with a Notice to Appear to his attorney?

No...and why would you want to? If the landlord isn't there, you'll be the only witness and there's no one to contradict you unless there's...

What is the next step after i (tenant) won an unlawful detainer ?

Call a tenant attorney, see what your rights are, and decide if you want to sue in small claims or in regular court.

I was recently evicted from a motel which I lived in for over 5 months they threw me out in two days

Get all evidence of your stay and go see an attorney right away. If you've stayed for 5 months, you're a tenant and an employee. Different rules...

I am renting part of my home to someone who doesn't want to vacate

You need to get a reputable law firm ASAP. I see lots of issues here that could cause trouble for you unless you get a good attorney to assist. I...

Is there a good chance for me to win a eviction case if one is filed against me? I don't owe rent(not late)?

Your question is both landlord/tenant and family/domestic violence, and I'm only good with the former. It's hard to say whether you're still a...