Получив письмо от брата, он поехал

Получив письмо от брата, он поехал к нему первым поездом. 6. Читая эту книгу, он нашел много интересных выражений.

Results (English) 1:

After receiving a letter from his brother, he went to him first by train. 6. While reading this book, he found many interesting expressions.

Results (English) 2:

After receiving a letter from his brother, he went to his first train. 6. Reading this book, he found a lot of interesting expressions.

Results (English) 3:

Having received a letter dated from his brother, he went to the first train. 6. While reading this book, he has found many interesting expressions.