Take a look at my Weaving Community page to learn more about why I make looms and encourage weaving.
This loom can be used for more complex weaving, as evidenced by the work of Lisa Rayner who has created a couple of lovely pieces on them. Take a look here and here. If you want to dive in that deep, you can find her instructional ebooks with patterns at Lisa Rayner Handwovens.
But! Don't start there!
Start with a simple, plain weave. I've created a tutorial with the very loom you have in your hands that will get you started. Just scroll down to see it.
Make time for making, and spend time in handmind as a practice.
Just in case you didn't click over to the Weaving Community page, Ursula K. Le Guin writes, "Nothing we do is better than the work of handmind. When mind uses itself without the hands it runs the circle and may go too fast; even speech using the voice only may go too fast. The hand that shapes the mind into clay or written word slows thought to the gait of things and lets it be subject to accident and time."
Here's a quick video tutorial to get you started. Google will get you deeper into learning if you find you want to go there. Just search for "frame loom weaving tutorials," and you'll find more than you could ever need!