Here are some useful properties:
(A⊗B)T=AT⊗BT
Adiag(x∘y)BT=Adiag(x)diag(y)BT
(C⊗D)(A⋄B)=CA⋄DB
vec(AXBT)=(B⊗A)vec(X)
vec(Adiag(x)BT)=(A⋄B)x
(A⋄B⋄xT)y=(A⋄B)(x∘y)
Where A,B,C,D,X are matrices and x,y are vectors of compatible dimensions.