New To Forum and Seeking Help with Making Contact

This is my first post, so please excuse any ignorance. I am a 51 year old adoptee who through an amazingly lucky and quick, yet semi-hesitant search last week found a lot of information about my birth family. I learned: my name at birth; my birth parents' names and birthdates; their marriage and divorce 20 years later; their new spouses; my birth father's obituary; 1 full younger sister's name; 2 half sisters' names; my birth father's brother; some addresses and phone numbers; and pictures of nearly all my birth family on Facebook. I feel kind of like a stalker! :o My hesitance in my search stems from my fantasies that someone should have found me. I made it easy, if anyone happened to be looking. (Waivers of confidentiality, periodic posting on websites, etc.) Now that I have all this information, I have no idea what to do with it! And I am unsure how I feel about it! I have spent the last week either "stalking" my birth family on the internet for more information or researching how an adoptee should proceed with a possible first contact. My birth father has sadly passed, so I thought maybe I should try to contact his older brother (72 yrs.) whose Facebook page I found (my b-sisters are "Friends" on his). Or should I try contact with my birth mother? My sister? Should I wait? Process it better? :confused: I would be very grateful for any suggestions, experiences or expertise shared with me. Thank you for taking the time to read this long post. Sierra61