Is it okay to buy things and give them away on Taobao?

Yes, you can just fill in the delivery address with his address.

But it's not good. You can't inspect the goods. What if the seller sends you a fake? I suggest not to do this. It's better to send the goods to you first and then send them to your friend.

It's better to spend a few more postage than to buy a fake.

Good luck, my friend.