Q&A for How to Sew Kimono

Yes, but it will take a lot longer than a sewing machine. Make sure to firmly secure your stitches so that it doesn't come undone. (I've made this mistake myself.)

You can use a needle and thread, but try to keep your stitches even and straight, and plan ahead, as this will take much longer to sew by hand.

The metric system is most commonly used worldwide; the USA still uses inches, feet, yards. You can convert to inches, though, if inches/feet /yards feels more comfortable to you.

A yukata is made the same way but without the robe underneath. So, yes, you can make a yukata the same way.