A good place to really dig down into child haplogroups of U106 and follow any news about recent developments:
http://www.anthrogenica.com/forumdisplay.php?52-R1b-U106
And, obviously, those testing positive for U106 should join:
https://www.familytreedna.com/public/U106
https://groups.yahoo.com/neo/groups/R1b1c_U106-S21/info