How to copy a deck from a shared deck page
Go to the link of the deck you want to copy, for example this Meeting Icebreaker Game deck
Click "Copy & Customize"
How to copy a deck from the Templates page
Go to the popular decks page
Select the pink "Duplicate & Customize this Deck" button in the bottom right. (If you haven't created an account, this button will take you to register, first.)
Then head to your account: your copied deck will now be in your account decks page.
Click on the deck to open it. You'll now be in the Builder, where you can edit and make changes to this deck. On the left you'll see thumbnails of each slide, and you can click on any slide to make edits.
