How can I tell if I am creating a card on the new V2 Card platform?
Look for the V2 icon in the lower left corner of your page, as seen here. If you're on the V1 platform, you can choose the V1 sections from the Table of Contents to the right.
V2 Card: Video Tutorial
V2 Card: Editing Card Text
When you begin designing your card, you will first be prompted to edit your card text. From the toolset that opens on the left, you will enter the text that you want to appear on your card. You can explore the options for size, font, and color:
You can select the formatting icon indicated below to adjust the spacing between letters, the spacing between lines of text, text alignment, or character case:
You can return to card text editing from the Create page at any time by clicking on your card, and then clicking on your card's text to open the text menu again.
Adding More Text Boxes
If you need to add another text box to your card, you can select More from the left menu:
From the options that open, select Add text:
Remove a Text Box
If you need to remove a text box from your card, you can select the text box you wish to delete and then select the Trash icon that appears: 
Adjust a text box
After selecting a text box, you can click and drag to move it around your card. You can also use the Rotate tool at the top of the text box, or the Resize tool in the bottom right corner of the text box to make adjustments:
V1 Card (Computer)
To add text, you can click into the text area on your card and begin typing. A Text menu will appear on the left with these formatting options: Alignment, Size, Letter Spacing (horizontal), Line Height (vertical), and Text Effect.
To change your font, line/letter spacing, or text color, click on and highlight the text you wish to change, and then choose the formatting option from the menu.
The Letterpress text effect is intended to make the text look as though it has been embossed by a letterpress. You can highlight the text on your card, and then select or deselect this option from the left menu to apply or remove this effect.
You can use the Undo and Redo buttons from the bottom left, should you need them!
V1 Card (iOS App)
Once you have started editing your draft, you can first tap on the card text to open up the keyboard and begin editing your text:
Once you have added your desired card text, you can edit the typeface of your text by tapping on Typeface from the text menu. You can double tap on any word to highlight, then select the typeface from the menu options:
You can change the color of your text by tapping on Color from the text menu. You can double tap on any word to highlight, then select the desired color from the available options:
You can adjust the formatting of your text by tapping on Format from the text menu. From here, you can adjust text alignment, font size, height between each line of text, and spacing between each letter: