Mid 40, mom of 3, just joined! -40 weight goal

Hi!

I joined MFP once without actually doing much and have now have signed back on and am really loving the tools! I've logged about 4 days of food and exercise and am feeling great but I really need support! I plan on weighing in tomorrow (Sunday) for the first time and then on every Wednesday. My best friend from High School who is my height (5'7) and was close to my current weight just lost 28 lbs and I am inspired (ok jealous! :-)) ! I would love to connect with others who have similar profiles. My goal is to lose 35-40 lbs since this is about the amount I've gained in the last 4 years or so and my cute clothes miss me. One question, If I "friend" someone on MFP, what can I see on their profile and what can they see on mine? I can't seem to find anything in the settings that answers this.
Thanks!