My car no boost so I am thinking change all hoses and what's that call in the photos?and also my hand break light icon always on how to fix it?

 

The green thing is a check valve. If it's broken, it needs to be replaced.

As far as the brake light, check this thread for several suggestions on what to check:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/parking-brake-light-stays-how-tighten-handle-39072/

 

if the check valve is not damaged, then just replace the hose...might as well replace all the others with silicone ones while yer at it. dont forget the few bear the turbo/intake area.

also if you do them, be sure to put the pills back in...Very Important(i forgot them...)