im new to pc, say i completed this version of the game and an update comes out, does the update apply to the current installed ver for me? or do i have to start?
When there's an important update:
In order to not lose progress, you first create a backup copy of save folder (located in "game" folder)->Download the new/most recent version of the game.->Move your save there.
For smaller stuff (like bug fixing/minor things between versions), developer tends to release Patch Data which you can download on the update's article.
EDIT:
As far as I know, the game does not update automatically.