Solid Mesh Edit

Hello everybody,

i´m very new to the programm so sorry for the simple question.

I don´t find any tutorial or good video for editing a solid mesh using tetra elemts.

i want to reduze the element size near an edge.

Please give me a step by step introduction /emoticons/default_biggrin.png' srcset='/emoticons/biggrin@2x.png 2x' title=':D' width='20' />

thanks for your help and patiance

best regards!