How likely can I get my charges dropped due to improper search, and is this an improper search?

You do not list enough facts. You do not state why the police stopped your vehicle. Contact a criminal defense attorney to consult with him or her...

Can a cop tell you he is not going to charge you if you tell him who the drugs are coming from in your area?

Maybe you can work out a deal with the State's attorney. The cop is not bound by his promise.

Do I need a lawyer?

no

Im being charged with a felony theft i found a lawyer to start my case for $300 this was in august

Hire an experienced criminal defense lawyer or apply for a public defender. Do not attempt to represent yourself.

Motion to quash the warrant. You will need to file it yourself and appear in court or hire an experienced criminal defense attorney to file the...

Can i sue my employer if he refused to hire me back?

No, Illinois is an at will state. Your employer can choose who he or she would like to hire unless they discriminated against you based on one of...

Forgery

Very likely if he is convicted.

Are there any reliable/accurate self background checks online? what are they?

Illinois State Police. Get a background check.

No, because of the felony retail theft.

Can a Nolle proseque be used against a person in court?

Depends. If the old case is past the statute of limitations for filing, then no. Can the prosecutor look at the case and give a harsher penalty...