Here are some quick guides to get you started.
To learn more about what xCall is and why you should be interested, take a look at What is xCall?
Start by learning how to send a cross-chain message.
Take a look some example dApps that were created using xCall for inspiration.
If you run into issues, join the ICON Discord (opens in a new tab) to get support from builders on ICON.
For general information and concepts, proceed to Explanations.