Blogging Etiquette

Okay, so you guys know that I'm to this and since I couldn't find the "Blogging for dummies" book anywhere, I have a question. If I have a blog that I love to read, is it okay for me to add it to my favorites or should I ask first (sorry Kim, Carrie and Lammy) or can I just add them. I guess this would apply to other websites as well. If there are any other rules that you think I might need to know I would really appreciate the tips. As always, you can feel free to comment if you have any suggestions as well. I'm so happy that I started this Blog and I just want to make sure that I'm not breaking any unwritten rules.

P.S. Kim, Carrie and Lammy, is it okay if I add you to my list??? :o)