To create text select the Text tool from the toolbar or cmd+t and click where you want to put text in your composition. If you click and release you will create point text. If you click, hold, and drag you will create a paragraph text box. You can choose the size of the bounding box before releasing. You can resize the paragraph text box after creating it. By right clicking on the text layer and selecting Convert to… you can change it to paragraph or point text.
Static vs. Dynamic
Static text doesn’t change. It will have the same words, position, and style in the app as it does in After Effects. Dynamic Text uses the same style and position as the text node in After Effects but the actual words will be populated by code. Dynamic text should be named Placeholder-(Blank) so that the engine will read it as dynamic text. To name a text layer, right click on it in the layer panel and select Rename from the menu. You can adjust the alignment of the text in the Paragraph panel.
Point vs. Paragraph
Point text will populate along a straight line from its anchor point. Paragraph text will populate along a straight line until it reaches the end of its bounding box and then it will break onto the next line. Paragraph text is best for text that will go on multiple lines or will be dynamic.
With the text you want in all caps selected, look in the Character panel for the TT symbol and select it. The text will then be all caps. If the text is dynamic, it will populate in capitals regardless of what is entered.
Layer comments can be used to modify text layers. Enter layer comments in the comment field in the layer panel. For a complete list of recognized layer comments refer to the cheat sheet (Link).
Leading: When this layer comment is added it will set the leading of a paragraph to the value specified.
Ellipsis: If the specified text extends to past the bounds of the paragraph box it will be ellipsized.