There are lots of tools to help you visualise your wireframes, however more often than not using a piece of paper and pen or pencil are the quickest and easiest way to start sketching out your wireframes.
If you do really want to start drawing digitally at an early stage you might want to consider using:
- Miro – there is a template that you can use if you would like to
- Invision’s freehand – if you are a student please contact me for access
- Figma – if you are a student you can access this free
- Adobe XD