Does it make sense applying for a Canadian tourist visa before wedding date?

This question may or may not relate to your U.S. immigration so if it does, please indicate what your question is.

Divorced 10 years ago, then as a single won DV Lottery 2014, married U.S. citizen two months before winning, my marital status?

If you are divorced and re-married, then your marital status is "married".

Am I cap exempt? I had an H1B starting in 2006, returned to India, and may be offered a job now in US.

No, you are not cap exempt.

My boyfriend got deported in february 2011 he was a class b-1 b-2 visa holder and Im a U.S Citizen what can we do?

It depends on why he got deported. If he was deported following conviction of a crime, it depends what the crime was. You should met with a...

I am a Canadian Permanent resident and currently on H1B in US.

There is no definition of unauthorized employment so it is not possible to give a yes or no answer. You can probably get away with it.

Is there a problem to re enter the US on I-20 graduation day?

Every time you leave the U.S. it is risky. They should readmit you, though, to attend your own graduation.

Does the DOL considers Spanish as a foreign language for PERM purposes in the specific case of the job being in the US, Spanish-

Yes.

Can my son apply for citizenship with me?

You do the N-600. He can file when one of you becomes a citizen.

I-140 Approved on Feb 14th, 2008 and the priority date will be current next month but got laid off from the job. My Options?

Check your eligibility for AC21 "Porting" to a similar employer.

It will have no effect on your status.