@hejira42 If you already have an existing codepen, just click export in bottom right corner of your codepen. Download the zip and extract. Then open that folder as a project with your code editor. Bootstrap, jQuery and any other library or framework that you’ve used in your codepen will be added automatically.
That said. The slow and cumbersome way of manually adding and typing what you need is of course better for learning and retaining.
BTW it’s not a dumb question at all.