More info needed
How long have you being working ?
Were you self employed ?
Do you have savings (if you are to be means tested)?
Make sure you sign on the day after you finish. You will be only paid from the day you first signed on. Bring your p45, passport/ID with you. Even if you do not get your p45 immediately make sure you sign on.
BTW - I updated your title. Please be more concise in future as it helps to get better responses.