The files you’ve purchased are zipped to ensure everything is delivered intact. To open them, just use free software like WinRAR or anything similar. Once you’ve extracted the files, you’ll find different formats depending on the pack you purchased. Here’s a quick explanation of what each file type is for:
The idea is to give you everything you might need to make your workflow smoother and more efficient. If you’re unsure where to start, I’d recommend opening the .AI files (when available) and using directly from there. They’re super flexible and give you the best mix of speed and customization for more complex drawings.