You're on a first date at a restaurant. You were telling a story about the town you grew up in. Now your story's done and you don't have anything else to talk about. You say:
So, yeah. Anyway...
Use this casual expression when you're at the end of a conversation and you don't have anything else to say. For example, if you're introducing yourself to a group of people in a meeting at a conference, people often end in this way:
So, yeah. That's about it.
It means that you don't have anything else to say about yourself.
"So, yeah." makes it sound like you've tried to think of other things to say about a topic, but you can't. So when you're trying to sound confident and intelligent, it's probably better not to use "So, yeah."
"Anyway..." is a word which introduces a new topic. When you're finished with talking about one topic and would like to talk about something else, you can use it like this:
Anyway, what did you think of last night's game?
Or you can use "Anyway..." to end a conversation:
B: Yeah, let's get going.
(Print this lesson)