It's normal to feel very overwhelemed. Don't let it worry you. Start slow. It seems like you have found something nice that you are using for the moment that has allowed you to fall in love with vaping and get rid of the nasty stinkies... keep it up.
As you go on, you will naturally try new things, learn new things by reading here, and slowly accumulate your knowledge. It's not a race, and you will never stop learning because new stuff is always coming up. That's what makes it a fun hobby.
