What to do after PhD? I obtained a PhD in Microbiology. I have some papers and a competitive CV. I would like to continue in Academia or to try industry. 

Is the normal path to find a postdoc job in naturejobs.com? I'm overwhelmed by the high number of jobs that are being offered, I just need one!
In the sciences, it is almost expected if you want to go into academia that you will do at least one postdoc.  (In some disciplines like astrophysics, you might even do more than one!)  There are a lot of different job boards out there for finding a postdoc, but your best source (assuming you are still on speaking terms) is your thesis advisor.  He/she will likely have friends and colleagues looking for a postdoc.  Those folks will then know the background you are coming from and likely put you on their short list.  Good luck!