Dumb question

[Blklab208]

Ok me boat did not come with an owners manual so here I am. Lol. I grew up with outboards so bare with me.
What exactly is this reservoir for and what do I use in it. I know the othe is engine oil. Is this power steering? If not where the heck is the power steering?
HELP!!

[mmwjr]

Yes this is the power steering reservoir.

[Blklab208]

Thank you so much ❤️ That was my guess but didn’t wanna screw air up.