Is it gonna be a problem if my fiance quit his job?

If you are referring to immigration requirements, financial matters are important. Family members can indeed help. See https://www.uscis.gov/

How do I get custodial custody of a child that's not mine whose parent recently deceased?

You need to petition a court for non-parental custody. There are forms: http://www.courts.wa.gov/forms/?fa=forms.contribute&formID=29. See also:...

Do I owe any money for any surgeries performed while on L&I?

Ask L&I to pay it. http://www.lni.wa.gov/ClaimsIns/

What is the law about leaving the scene of an accident and sending her spouse to handle it while the officer drove her home?

It's not a hit-and-run if the party was in contact with the police and gave her pertinent information. If she was speeding, she might be partially...

Can I get my neighbor in trouble for looking into my window from there home

See http://app.leg.wa.gov/RCW/default.aspx?cite=9A.44.115

Can I buy firearms?

See http://app.leg.wa.gov/RCW/default.aspx?cite=9.41.

Why after being in court on a charge of possesion of a controlled substance would the papers say, NCIF pending investigation?

Maybe they were waiting for the lab results.

What would the IRS do?

The Tax Code requires payment of taxes on all income, from whatever source received.

In my house I see the neighbor (18+) in her house in room changing. Is it illegal?

See http://app.leg.wa.gov/RCW/default.aspx?cite=9A.44.115. Your defense attorney could argue that the alleged victim did not have a reasonable...

See http://app.leg.wa.gov/RCW/default.aspx?cite=59.20