There are three kinds of armor in Fallout 4, and they're not clearly defined. Otherwise, NPCs, might grab them when alerted and move them! If you leave a suit of Power Armor, you may want to take the Fusion Core out using the Transfer inventory command. Build enough beds and setters, as well as accomplish enough Minutemen recruitment missions and you'll soon have a bevy of settlers. Using your crafting abilities, you can tear down the old houses in Sanctuary (be sure to loot them first) and replace them with new structures of your own design. You Can Level and Rebuild Sanctuary to Get Cool Stuff to try and shoot it down, but it doesn't work very well.
You CAN throw a grenade and switch immediately to V.A.T.S. Even if you individually select a grenade just before entering, the interface will simply refuse to let you throw it. It's weird, but you can't throw grenades from inside the V.A.T.S. Use fast travel to hop back and forth between Sanctuary and the areas you are exploring and constantly drop offthe excess materials and weapons you've discovered. This is hugely useful as Fallout 4's complex crafting system requires you to constantly gather new resources for modding and repair jobs. Dumped your items into a Weapons Workbend? Head over to the nearby Armor one, and you'll see all your items here as well! What's even better, is that all crafting stations are linked.