Do not worry. All the links are here for English tutorials. In future, all texts are multilingual. DarkRed is English.
If you make a question in the FAQ Mesh Modding thread http://www.tombraiderforums.com/showthread.php?t=154890
, you can use any language (yes german are wellcome :-). I make then a translation to german language and a multi language response.
If you find links to some other tutorials about mesh modding, then post a link in this thread.