There are several documents which you need to complete like your school credentials authenticated by your respective embassy, employment certificate etc. and NOC from your employer (very impt). You will submit 3 set of copies for evaluation.You will wait then for their call for the result of theevaluation and as far as i know, they do not have any written examination for now however, there are some applicants who are subjected for oral interview based on the outcome of evalaution. After only you've finished this phase then you can undergo medical exam, police clearance, vaccination and submission of BLS and or ILS certificate.
You better visit their office and I am sure their staff are willing to answer all your questions. Good Luck!