Here are a few tutorials and links I though might be of use to everyone involved.

http://yanfly.moe/2015/10/10/yep-3-battle-engine-core/

http://yanfly.moe/2015/10/11/yep-4-action-sequence-pack-1/

http://yanfly.moe/2015/10/12/yep-5-action-sequence-pack-2/

http://yanfly.moe/2015/10/12/yep-6-action-sequence-pack-3/