I prefer silicone based lube cause you only need a few drops and it doesn't dry out like KY. It's not as easy to get though! The brand I like Is Pjur.
Wet Stuff and Astroglide are 2 other brands that come up in a google search.
I buy mine from Passionfruit in Richmond( Melbourne) and they also have an online store.
And I just have to say.... Have fun! The hormones make it brilliant so if you feel like it... Go for it!!!!