Record some useful command for the environment tikzpicture.

• \begin{tikzpicture}[>=stealth,

  execute at end picture=%

  {

  \begin{pgfonlayer}{background}

  \path[fill=yellow,rounded corners]

  (current bounding box.south west) rectangle

  (current bounding box.north east);

  \end{pgfonlayer}

  }]

  %drawing command here

  \end{tikzpicture}

• \begin{tikzpicture}[remember picture,overlay]

  \node [scale=10,text opacity=0.2]

  at (current page.center) {Sample};

  \end{tikzpicture}

• \begin{tikzpicture}[remember picture,overlay]

  \node [xshift=1cm,yshift=1cm] at (current page.south west)

  [text width=7cm,fill=red!20,rounded corners,above right]

  {

  text

  };

  \end{tikzpicture}

• \usepackage{tikz}

  \usetikzlibrary{calc,through,backgrounds}

  \usetikzlibrary{decorations.pathmorphing}

  \usetikzlibrary{decorations.text}

  \usetikzlibrary{decorations.shapes}

• Introduction to 3D-plotting.
  http://www.fauskes.net/nb/introduction-to-sketch/

\usepackage{tikz}

\usetikzlibrary{calc,through,backgrounds}

\usetikzlibrary{decorations.pathmorphing}

\usetikzlibrary{decorations.text}

\usetikzlibrary{decorations.shapes}