What will happen to my friend? he got a citation for "Assaulting an officer" but he was under the influence of "KIEF"

Being voluntarily "high" is not going to help him. He will probably be charged with assaulting an officer. Make sure he talks with counsel.

Can a da subpena you at pre preliminary or preliminary being a wittness

If you are a witness with pertinent information, yes.

What would happen if caught with less than an ounce of marijuana and a glass pipe containing marijuana residue in california?

If charged it would be an infraction resulting in a fine and or diversion program in in Riverside county. Talk to local counsel, especially if you...

No limit. It is up to the DA how many times they will attempt to re-try the case and it is up to the court to decide when enough is enough.

What constitutes an arrest?

You were not arrested, but you charged and convicted by plea. Talk to counsel locally about your specifics.

Would I be able to change to get house arrest instead of doing weekends when it has already been sentenced?

In Riverside, conversion to house arrest is not too difficult, assuming you can afford the actual number of days serving house arrest. Other...

Penalty for obstruction of justice?

Both are misdemeanors assuming a previously clean record. You will probably receive a citation in the mail and should speak to local counsel.

Summary probation need to move to VA!!!

You need to talk to probation and request a transfer. If you were sentenced at Southwest Court, you may have to go to Riverside Central. Call them.

If the have merchandise evidence on him and he said he cousin gave it to him how many years is he looking at .

Contact some other attorneys but such a sentence would not be unusual for such violent crimes.

I was involved in a domestic dipute and the cops came to my house when i wasnt there and took a photo off the wall of me..why??

Ask your attorney but the most plausible explanation is that it was for identification purposes.