For helpful threads they are on this forum, the Support and Advices, for your coming out and all sort of problems The Health one is to help you to live a healthy life and being Feedbacks is for helping for sort of problems about using this forum
There is no easy way of finding "the best threads" because people have different ideas about what are good threads. It depends on what you're looking for at the time. As a guide though, look through the three sections in the Support Area for threads that have got lots of replies and which the title seems relevant. As you read threads you'll get to recognise specific regular posters who say things that you agree with or find useful etc. You can then use the search system to find other threads they have posted in (by clicking on their names and choosing the relevant option). There are a few "sticky" posts at the top of some of the sections. These are generally information rather than discussion, and are worth looking through if the subject is relevant.
Personally, I have alot of PFLAG (Parents, Families, and Friends, of Lesbians and Gays) resources that could be beneficial to you too. All you have to do is PM me and let me know what you are looking for.