Here is some great beginner information to get you started: https://makersgonnalearn.com/cricut-infusible-ink-what-you-need-to-know/ and here are some great Infusible Ink hacks: https://makersgonnalearn.com/10-cricut-infusible-ink-hacks-you-probably-didnt-know/

Here are some we recommend: https://makersgonnalearn.com/materials-to-use-with-cricut-infusible-ink/

We have had success with some off-brand products! Here are some we recommend: https://makersgonnalearn.com/materials-to-use-with-cricut-infusible-ink/ and https://makersgonnalearn.com/do-i-really-need-cricut-brand-infusible-ink-blanks/

In order to get the ink to bond properly with the fabric, you need to use shirts that contain at least 65% polyester. The higher the polyester in the shirt, the deeper and more saturated the colors will be. For example, in a shirt that is 100% polyester, black will be a true black. In shirts with less polyester in them, the black will be more of a gray.

Here’s a great video telling you all about it: https://makersgonnalearn.com/videos/how-to-use-cricut-infusible-ink-markers/

No. That’s one of the great things about Infusible Ink. It will never crack, peel, or flake. Because of the way it bonds to the surface, it really is permanent.

You can but there are some important things to know before you buy some. https://makersgonnalearn.com/using-off-brand-mugs-in-cricut-mug-press/