У нас очень много учебных пособий и материалов для изучения немецкого языка. Я могу спокойно найти объяснение немецкой грамматики на русском языке в интернете, или в своих книгах.
We have lots of manuals and materials for learning German. I can find an explanation of the German grammar in English on the Internet, or in his books.
We have a lot of teaching aids and materials for learning German. I can easily find an explanation of German grammar in Russian on the Internet, or in his books.
We have very many training manuals and materials for German language. I can calmly find an explanation German grammar in English on the Internet, or in their books.