Welcome to the Translator group. Please read Tasks_and_Tools, Translate_a_Page and Translation_Workflow before starting work. You will find lots of help linked from those pages, but please ask if there is anything you don't understand.
Please be aware of the category translations that have been agreed for your language. You should find it linked from Translation_Help_Needed. If your language is missing, please request a column to be inserted (or insert it yourself). If your column is incomplete, (sometimes extra categories are added) please complete it.