What can we learn from Tacitus's account about the economy, politics, society, and culture of the Germanic people of the first century C. E?

The historian Tacitus wrote many important data of the Germanic, with which he could describe that they were a society that lived in Clanes, took the marriages very seriously, the women had importance in the decisions; the Germans were tall, strong, red-haired and blue-eyed, all the same as he wrote. The German brave warriors, if they did not fight they were bored, and what distinguished the men was the amount of battles and dead that they had accumulated, whereas surviving a battle where they chief had died was a dishonor. Women encouraged men as long as there were no wars, the whole town enjoyed much food and rest.