If your an employee than I wouldn't worry about it, the company will sign you up automaticly for one of the public insurance companies, you'll get a health card in the mail and your
health insurance is part of the payroll taxes that everyone pays. You do have the option of private health care but unless your 100% fluent in German it isn't worth the hassle. The main difference from the rest of Europe is in Germany you don't have the option of purchasing private health care on top of the state plan. for example in Spain my wife (I'm not legal yet so I'm not paying any taxes on my inocme) is paying for public health care via payroll taxes as well we have purchased private healthcare which we pay out of pocket. This isn't possible in Germany. You have to go either public or private and regardless it comes out of your pretax income. Generally speaking there is very little difference between the various insurance companies just take what ever option the employer signs you up for. As for "how much" it costs per month, it's really a meanless number becuase it's part of your payroll taxes. What matters is the take home.