looking for new friends

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Just started using this site almost 3 weeks ago have been "dieting" since mid Dec. but started this site and find it helpful. Would love to find people to talk to that are trying to loose weight too, I am 36 single Mommy of 4 (2 at home) and want to loose about 70 to 80 more pounds Plus not sure what a healthy weight is for a 36 year old at my height 4 foot 11 online sites have said 90 to 110 pounds I don't see how that is possible for my age/frame any ideas. Thanks.