Vocal range

Hello,

I am currently working to improve my vocal range so I am practicing the "How to gradually sing higher" lesson by Camille. I was wondering if in the process of improving my range I would also be training my head voice. Or is the case that I have to train head voice separately?

When working at the top of your range (and extending higher), you're probably already in head voice! But if head voice is new to you, consider this series first:

https://www.30daysinger.com/tutorial/head-voice-and-falsetto-for-male-singer/1

This lesson also covers range extension within each register (since the syllable/vowel you use matters): https://www.youtube.com/watch?v=JXqiqTyxoBM