I am designing some key tags and am VERY new to illustrator. I currently just have a circle placed where I would like the hole, is there a way I can "cut that circle out so there is just a hole in the design that is transparent behind it?
If you want to make the area transparent without destructively or practically affecting any of the other artwork you can use a knockout group. If you want to cut through everything so there is nothing visible below, you can use a page knockout group.
- Make sure your shape is above everything else
- Give the shape a fill and set its opacity to 0%
- Check "Page Knockout Group" from the panel menu...
If you only want to cut through specific parts of your artwork (e.g. you need a background image), you can use a regular knockout group, which you define on the group or layer you want to cut through. You can see an example here:
Use the pathfinder tool:
Google it or youtube it: