At each court there is a member of the Witness Support Service who will guide you through the day and generally give you a shoulder to lean on.
They should greet you when you arrive, show you into the courtroom (before the court session begins) and explain the court process to you. You will then be taken to the witness waiting room. The prosecutor should visit you before the trial begins and give you a copy of your statement to refresh your memory. Any other prosecution witnesses will also be with you, together with any police officers involved. At least one will be there as the �Officer in the Case�.
Assuming the defendant maintains his not guilty plea, witnesses will be called to give their evidence in the order of the prosecutor�s choosing. (n cases such as yours it is usually the victim who gives evidence first).
After giving your evidence you will almost certainly be �released� by the court. This means that you can leave the building, or watch the rest of the trial from the public area. (You must not discuss the evidence you have given with anybody, particularly those still to give theirs).
Be prepared to be at court for some time. Also, be prepared to be disappointed. There may be other trials listed along with yours and there is a possibility that your trial may not be the �priority�. If this is so, and another trial is ready to go, yours may have to be adjourned to another day.