Hi everyone, I’m new to Sparkle and have been able to figure most things out except this one. I would like to switch between text when user clicks on the heading on top. How can I do that? Thanks!
Welcome onboard @ben! 
This can be done but not in the conventual way if you have come from other web design platforms.
You can achieve it by using Sparkle’s popups. If you check out Duncan’s documentation page on it (towards the bottom) it will give you guidance in how it can be achieved - Popups | Sparkle Documentation