HELP!

So I am so new to the whole blog thing and quite frankly have no clue what I am doing if you are thinking I do by my blog then I am truly a master of disguise  I just discovered today, that people I don't know have not only looked at my Blog, but left me a comment!!!! I was so happy I could have cried okay maybe not cried, but I was REALLY happy, but I don't know how to comment back and show my appreciation...I need some major Blog schooling fast!!!! For those of you that view my Blog or left me a comment...THANK YOU SO MUCH! and if anyone can teach me a few things about Blogs PLEASE do.