hi, the full copy birth certificate will be just that, a certified copy, as opposed to a photocopy. Ask your mum where she registered your birth and then go to the same place with about �8 and your details, like name at birth, date of birth, parents names, and they will do you a copy then and there and it is acceptable as id for a driving license, if you are female and have a different surname now through marriage you will also need to send your mariage license with yor driving license application to show the legal change of surname.
I think you should find all the info you need on the documents you can send in the accompanying booklet you got with the application.