Hi Lisa, as there are many points you've raised here, I'll try to address all of them I can in point form, to help improve your enjoyment of the game!

- The Pro Tips apply to all versions of the game, including paid versions

- Magic is a resource, which you'll need to craft a special item to progress in the game

- You can increase Tech Point production by assigning more scientist villagers to your Research Table, as well as adding Science Totems to your village

- Call the Trading Ship back at any time when you have the necessary resources/items, by clicking on the dragon head statue, which functions as a beacon

- We can't comment on the Big Fish version of the game as we don't support it, but it's not possible to save one village and create another in the same app. You could, for example, start one game in the Steam version and one in the Windows Store version (these are identical versions), that would be completely separate and both on the same device