Check in your Islamic laws book of your marja for details and conditions of when to perform this. It is like a normal ghusl with a different intention.
Wudu isn't needed after ghusl al janabah and you would automatically have wudu unless you break it during or after your ghusl. For other non-janabah ghusls wudu must be made after if you wish to pray. If your marja states ghusl al hayd gives wudu or ghusl al juma' then you may follow this.
May Allah grant you success