One main concern for new comers is health, the above website proposes a helpful navigation guide for health (Gesundheitswegweiser für Migranten) available as PDF file in 7 languages. It helps understanding the German health system.
What most of us need next is to know which Doctor actually speaks our language. Leipzig International provides a list of doctors speaking foreign languages called "Ärztewegweiser für Migranten", a PDF document regularly updated, available on the German version of the site regarding “Gesundheit” (health).
Scroll down the page and look for "Gesundheitswegweiser für Migranten - überarbeitete Auflage".
It is compulsory to have a health insurance in Germany.
Those websites provide comprehensive information on health insurance:
Deutsche Sozialversicherung with pages available in English and French
British-German Association with a direct link on the Health Insurance topic
How to Germany all about insurances in Germany