Impossible to say, but you should consider filing a PC1203.4 Petition for Dismissal regarding any prior cases. Be honest about your past though...

How do I know If I have a warrant or what should I do?

Contact the court clerk at the courthouse where you were supposed to appear. The sooner the better.

What should i do about my lawyer not asking for a discovery as its been 1 year and prelim is on 6-20-2019

You should be asking your attorney about this. S/he should review it with you, but has no obligation to give it to you.

How can I file a motion of furlough in the Santa Clara county?

You cannot do anything other than to contact his attorney.

No, he cannot stop the investigation. The cat’s out of the bag.

What kind of attorney do I hire to file to have a trust settlement agreement found invalid??

You can’t blame the lawyer because you dislike the settlement you accepted. Game over.

Any mandatory minimum for non violent white collar crimes ?

Details matter. This is all too vague. Depends on the specific offense alleged, the amount of the theft/fraud, criminal history, etc.

How can they ask me about crime stoppers payment when its suppose to be anoymous?

No, you can’t use the 5th Amendment.

How can they ask me in court about the money i received through crime stoppers?

You sent you the subpoena? The DA or the defense??

If I go to jail for prostitution in Santa Ana CA will they give me back my phone & money when being released?

To be honest, it's unlikely you'll get either back assuming the phone was used in your work and the money was obtained whilst committing illegal...