You will be provided with a copy of the syllabus and details of forthcoming professional examinations. If you think you have the skills required but are not quite sure please discuss this with the Examinations Officer.
There are LeRoc workshops, individual tuition and training courses available from existing members. It is recommended, though not compulsory, that you undertake some kind of tutorial from an existing member to make sure you are confident about passing the exam.
Exams are normally held when we are able to batch a number of candidates together (ie infrequently), so get in touch ASAP in order not to miss a forthcoming scheduled exam, otherwise you may have to wait a number of months for the next one.