first of all Forums are back congratulations. second there is a relatively new animation software that became open source and thought you guys should know that. it's used by studio ghibli, you know, the ones that make the awesome anime movies. anyways just thought you should know.and also there is no good guide on how to use it since it's fairly new so...
here's a link to the software Open toonz
and here's shamelessly self promoting my comic Warlock
Have fun