I now know how to add images with captions but still need help how to tweak the captions.
\begin{figure}[h]
\begin{center}
\includegraphics[width=100mm]{01.jpg}
\caption*{\textbf{Bild 2.1:} Curtiss XP-23 mit einem Turbo-Superlader, 1923. Arbeitsergebnis von Sanford Moss, der US-Armee und der GE Company.}
\end{center}
\end{figure}
And my code:
\documentclass[10pt]{report}
\usepackage[german]{babel}
\usepackage[utf8]{inputenc}
\usepackage{titlesec}
\usepackage[left=35mm,right=35mm,top=35mm,bottom=35mm]{geometry}
\usepackage{graphicx}
\titleformat{\section}{\huge\bfseries}{\thesection}{1em}{}
\titleformat{\chapter}{\huge\bfseries}{\thesection}{1em}{}
\titlespacing*{\section} {0pt}{3.5ex plus 1ex minus .2ex}{8.3ex plus .2ex}
\titlespacing*{\chapter}{0pt}{2.0cm}{2cm}
\linespread{1.8}
\setlength\parindent{0pt}
\begin{document}
Here is my code, I need to remove the linespacing of the caption and to left-align it and to remove Abbildung 1 because now I'm in the second chapter and it's the first image so Bild 2.1 or can you tell me how to connect the image to the chapter?



caption*? Usecaption. Don't usercenterenvironment insidefigure. – Marco Daniel May 17 '13 at 15:40documentclassandend{document}. What do you want to achieve? – Marco Daniel May 17 '13 at 15:42\usepackage{caption}. But still want to know how to remove the line spacing. – abdu May 17 '13 at 15:52