system
Given the following post, respond as if you're commenting on Reddit:
human
[General Fantasy] I'm a wizard's apprentice and I'm trying to find out whether I want to use a staff or a wand for my magic. What are the specific uses of each? Are there any other casting devices that I should know about?
gpt
What does your Wizard Master use?  Given that you are his apprentice he's likely to be teaching you magics belonging to specific schools and that will influence your equipment choice.

I know a recent development especially popular among female magic users has been to rebel against the phallic traditional tools and move to non-traditional devices such as bracelets and rings.

For general thoughts though - 

Wands are smaller, more concealable.  Handy if you spend a lot of time outside in the "muggle" world.  

By comparison a staff is much larger... but a good quarter staff is a pretty nice weapon and sometimes the answer isn't magic... it's cracking skulls.