Preparing a page for translation needs more patience than skill. If you can spare short periods of time, frequently, this is a very helpful task.
Translate a page. You need to be fluent in a language, but not a professional translator to translate a wiki page. Translating manuals is the skill of a special team. That page also points you to instructions for translating sidebar links.
WikiSentinel is a specialized feed reader that collects the translated pages that need to be updated. It allows you to see a preview of the changes in the selected page and open it directly in the web browser: ready to translate.