fonts

1. To stat typing, use the text tool.

Then, click on the desired area on the canvas before you start typing.
 

You can move the text layer around with the move tool.

2. You can change the font, font size, font colour, text alignment, indent, line height and letter spacing all from the toolbox as shown below.



Otherwise, you can also edit font, font size, font colour and text style (bold, italics, underline, strike through) from the mini toolbox on top of the text box when you are selecting the text layer.



Anything you change from the main toolbox on the left will apply to the whole text layer while anything you change from the mini toolbox at the top will only apply to the specific letter/word you highlighted before applying the change.

#note: do not scale up your text using the scale tool, change the font size directly if you need your text to be bigger scaling the text layer will lower it's quality.

3. We would want to choose fonts that would suit the theme of the poster we're making, so here's some websites where you can download free fonts:

4. I would recommend to keep the font constant throughout the whole poster (except