map

[TarteaPaul]

I found the map but can not build anything except the two sectors, why?

[SirRoy]

Follow the tutorial.

[RuneMunki]

I found the map but can not build anything except the two sectors, why?

Yup, you need to follow the tutorial. Basically once you've "explored" and removed the mists over a sector you then have to defeat the bandit leader in a sector before you can claim it by placing a storehouse within it.