I'm in like the fifth town now and I really like how all the settlements feel fully related and connected to each other, rather than just primarily standalone areas like Fallout 2 had.
So is this shit or not? What does it compare to in terms of story / C&C?
Is it worth to boot up?
Writing is good, NPCs have personalities and a lot of interesting things to say, everything fits reasonably well into existing Fallout lore, setting is like an even bleaker version of Fallout 1. Hard to say exactly how much C&C there is at the minute but there are plenty of quests that lock you out of another faction's quests and points where you're offered a number of ways to proceed with your goals. Quests are pretty varied and interesting too. It's definitely worth playing.
Only real criticism is that I can't think of a single time so far that Science, Repair or Doctor have been checked.