You are very welcome to use online resources to help you carry out these tasks. You MUST cite (in the code comments or in an adjacent cell) if you use code or tutorials that you have got from another source. A brief statement and a link to the material is considered acceptable acknowledgement.
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.