I'm a beginner in LaTex so a 'simple' solution would be great.

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The simplest solution would be to take a drawing software and draw it by hand. An interesting solution within LaTeX is pgf/tikZ. Not too difficult, but much work.inferno wrote:[...] I'm a beginner in LaTex so a 'simple' solution would be great.
Learn LaTeX easily with newest books:
The LaTeX Beginner's Guide: 2nd edition and perfect for students writing a thesis
The LaTeX Cookbook: 2nd edition full of practical examples for mathematics, physics, chemistry, and more
LaTeX Graphics with TikZ: the first book about TikZ for perfect drawings in your LaTeX thesis