If you have less than ideal handwriting then this hack may be for you.
I discovered partway through my university course that using a Biro while making notes meant they were illegible even to me when I looked to them later after lecture. Buying a pen that suits your writing style, hand size and grip preferences can make a big difference to how legible your handwriting becomes and a nice consistent factor to enable you to hone your handwriting skills. My personal preference is a Parker Jotter with the added bonus that they clip nicely into the rings on a note pad.