The lipsync is still heavy WIP, the one in V1.3.4 is more of a proof of concept that really a functional one. There is a more improved version in the still in work V1.3.5
I would like to make a tutorial, but English isn't my first language which could make things a bit hard. there is a document made by a community member Mushie that is usually updated to cover the most recent updates for the software : Mushie's Documentation