Cricut Design Space…….

a program called Design Space. It’s completely free to download (you don’t need a Cricut machine), so you can try before you buy.
You can operate Design Space from desktop or laptop computers, smart phones (iOS or Android) and tablets.
The Design Space software has a library of over 100,000 images, fonts and ready-to-make projects. Some are free, some cost a small fee.
There is also a subscription service for Design Space, called Cricut Access. It grants access to the majority of images, fonts and projects (excluding some, e.g. licensed projects like Disney or Simplicity).
You can import your own images directly into Design Space to cut them out with your machine. It accepts all common file types: SVG, PNG, JPG, DXF, GIF, and BMP, so you can easily import images made in Adobe Illustrator, Photoshop etc. The import process will even help you to clean up the image, e.g. remove unwanted imperfections.
To cut anything, you will need to apply it to a sticky mat so it can pass through the machine. Basic mats are provided with each machine, but specialist mats (e.g. for balsa wood) are sold separately. The only exception is Cricut Joy, which can cut Smart Vinyl and Smart Iron On without a mat – details below.
Cricut sell a huge range of consumables (paper, card, vinyl, iron-on, fabric, felt, chipboard etc) to use with your machine – and I’d recommend you use them for the best results. However, you can also use non-branded materials, including whatever you have in your craft supply.
You can use tiny scraps of consumables too (no need to use full, complete sheets). So it’s easy to minimise your waste material.