What happens at arraignment and will I go to jail for first degree residential burglary

Your question as stated can't be answered. WA uses a sentencing grid to determine the punishment for each crime. Residential burglary is a class B felony: depending on your offender score, which takes into account priors, you could be looking at somewhere around 3 years to more than 8. You need to consult a WA criminal lawyer to help you figure this out.

To answer your first question, regarding arraignment, I have enclosed a link to Kurt Boehl's article, King County Felony Criminal Process. This should give you an idea what will happen and what the procedural process is. Whether you will go to jail depends on a number of factors. Many of the criminal defense attorneys offer free consultations. You can determine whether an attorney offers a free consult by viewing their Avvo profile.