The translated categories are listed below:

Messianic Judaism http://beth-yeshua.whenstarted.nl/?q=taxonomy/term/7
Biblical Feasts http://beth-yeshua.whenstarted.nl/?q=taxonomy/term/44
Parashat haShavua http://beth-yeshua.whenstarted.nl/?q=taxonomy/term/52

When you click the category at the left side you can see the articles. You can start with those who are listed there.

1. Go to the category on the left side
2. Click an article
3. Click translate
4. click at the right side of Hebrew on ‘add translation’
5. Fill in the translation
6. Finally go to the bottom and click save