Do I have to legally give my ex-wife a portion of my tax return?

There's not nearly enough information in this question to give a meaningful answer. When was the divorce? Who did the kids live with? Etc...

I need help with my divorce and I want to be able to see my son haven't seen him in 8 years. Should she be in trouble.

Time to consult with an attorney about asserting your rights. There's a lot of missing information in your question and it will be best to talk...

How can this person become a co-parent with me? How can this person have legal rights to help assist him in medical, education?

Please seek legal counsel from an older Family Law attorney. These arrangements can go astray and turn into something completely unintended. Map...

Should we submit our answers to the district clerk or obtain legal counsel?

If you don't know about potential insurance coverage then pay an attorney to find out if there is a policy in place to protect you.

How can I make it obvious that they're hired for a very narrow range of input? what type of arrangement is this called?

You might be looking for the phrase 'limited scope of representation'.

How do I wash my hands from this debt?

Most likely the property will 'stand for the tax' and the taxing authority will foreclose on the property to auction off for the debt.

Might mean that your case has been dismissed. If that has happened then the court did not make a ruling for the relief sought; for instance, if you...

What are my options? Can i file a motion against this? what documents must i file? Please advise

This is beyond a DIY project. Time to hire counsel.

What can I do as in taking the next step?

Hire an attorney to stand up for you; if you don't have a court order for possession and support in place you need one. If you have an order you...

What can I do as a parent? Can she be forced to attend school? What kind or trouble are we in?

Caveat: I don't practice in this area but I'm urging you to seek counsel from a Criminal Defense attorney who handles truancy. My interpretation...