[Ashlandchris]

I use a silhouette cameo and it comes with software that is not immediately easy, but as above, youtube helps.
What I like is being able to use bmp or jpg files and convert to masks, although it works better with logos with good light/dark shade differences.

It is also useful having a measured grid in background so you can make window masks and see where things will fit etc.

Best advice is "don't try to make any single mask too complicated or too big" otherwise it is a swine to try to apply.
I use an offcut of clear vinyl to apply the masks, and I de-tack it slightly by sticking it to my jeans a couple of times otherwise it can sometimes be tricky to get the masks in place correctly and remove the applicator tape