Go to Barry Beckham's free styles and themes for PT-AV-Studio page.
Styles & Themes – Beckham Digital
There are a number of "triptych" styles (and many others) that you can download. Bring the styles into the program and examine them a bit. This is a very easy way to get started in learning how to do more complicated things in PT-AV-Studio. Once you understand how they work, you can modify them to suit your own purposes rather than trying to start from scratch and figuring it all out on your own. There are many other styles and templates posted on this forum, mostly under the Section "Styles and Templates". There are often demos of the styles so you can determine whether they might be useful to you.