Welcome to our forum.
You might want to check out our Life stories and blogs board
, there a lot of narratives about what has and hasn't worked for other people in their poly journeyings.
Sorry about the recent rift with your mother. Hopefully the two will be able to mend the tear a little at a time.
There are certainly many supportive people here, and you will no doubt make some new friends. Have a look around at our various threads, and post any thoughts or questions that come to your mind.
It takes a good bit of effort to make polyamory work, but the effort is well worth it (I think so anyway). I'm glad you could join us!