Quote from: Yogafan00000 on October 03, 2017, 12:52:30 PM

What exactly is this segwit address I have starting with 3, and why's there no privatekey to it?

Read the thread, I already explained above.

Quote from: Yogafan00000 on October 03, 2017, 12:52:30 PM

What happens if I send funds to it? Is the balance held under the orig address?

No, it is held under the '3' address.

Addresses and public-private key pairs are different things. A public-private key pair can be associated with many different addresses, not just one '1' address.

Quote from: Yogafan00000 on October 03, 2017, 12:52:30 PM

What's the difference between this and the first non-segwit address?

It uses segwit.

Quote from: Yogafan00000 on October 03, 2017, 12:52:30 PM

Why should I use 1 over the other?

Segwit has lower transaction fees.