How can I learn to be more talkative without sounding weird?
To be more talkative, you will need to research a lot. Make sure you know what you are talking about, to avoid being weird. You should also use the right communication skills, so as to get the attention. Get the communication skills from http://workawesome.com/communication/effective-communication-skills/.
Just be yourself. I suggest you hang out with persons whose company you enjoy. When you are with them, you can talk and talk without you knowing it. Try it.
Talk, talk, talk. The more you do it, the better you get at it.Take a closer look at loisewanjohi-s answer, and angelchristine-s . both make very good sense, and get to the issue