I've been wanting to post these for some other adoptive moms. Sadly, Jafta insisted that his dreadlocks be cut, but I sured loved them when he hd them! Here is a short instructional video on how to finger-lock dreadlocks at the root, and some other techniques for getting new growth to lock together. Hope this helps!!
Then, this video shows a technique for keeping the dreadlocks from unraveling when you trim them: