Fix task description

exercises/basic-document-structure/task.tex

@@ -1,8 +1,9 @@
 \section{Structure your document and text}
 
 \begin{enumerate}
-	\item In the directory \file{exercises/basic-document-structure}, you can find a file named \file{document-structure.tex}. Wrap the text of the file in a \code{latex}{document} environment and add the following preamble. Afterwards, compile the document. 
+	\item In the directory \file{exercises/basic-document-structure}, you can find a file named \file{document-structure.tex}. Wrap the text of the file in a \code{latex}{document} environment and add the following preamble. 
 	\codeblock{latex}{./exercises/basic-document-structure/preamble.code.tex}
+	\item In TeXstudio, right click on the file and select \enquote{Set as explicit root document.} Next, compile the file.
 	\item Congratulations! You have created and compiled your first \LaTeX{} 
 	document. Maybe you have noticed that paragraphs within the text were 
 	created by using \code{latex}{\textbackslash\textbackslash}. Replace the 

exercises/literature/literature.code.done.tex

@@ -1,5 +1,5 @@
 An introductory \LaTeX{} course can be found in \enquote{\LaTeX{} in 24 Hours} \cite{datta2017}.
-There is a plethora of further handbooks \cite*[e.\,g.,][]{goossensmittelbach2002}.
+There is a plethora of further handbooks \cite*[e.\,g.,][]{goossensmittelbach2010}.
 
 \bibliographystyle{plain}
 \bibliography{exercises/literature/literature.done.bib}

exercises/literature/literature.done.bib

@@ -11,13 +11,13 @@
   bibsource = {dblp computer science bibliography,
                https://dblp.org}
 }
-@book{goossensmittelbach2002,
+@book{goossensmittelbach2010,
   author    = {Michel Goossens and
                Frank Mittelbach and
                Alexander Samarin},
   title     = {Der LaTeX Begleiter},
   publisher = {Addison-Wesley},
-  year      = {2002},
+  year      = {2010},
   isbn      = {978-3-8273-7044-0},
   timestamp = {Fri, 15 Apr 2011 13:37:33 +0200},
   biburl    = {https://dblp.org/rec/books/daglib/0011922.bib},

exercises/literature/literature.raw.tex

@@ -9,4 +9,4 @@ There is a plethora of further handbooks (e.\,g., Goossens, Mittelbach and Samar
 
 \noindent [Datta 2017] Datta, Dilip: LaTeX in 24 Hours - A Practical Guide for Scientific Writing. Springer, 2017. \url{http://dx.doi.org/10.1007/978-3-319-47831-9}. – ISBN 978–3–319–47830–2
 
-\noindent [Goossens u. a. 2002] Goossens, Michel ; Mittelbach, Frank ; Samarin, Alexander: Der LaTeX Begleiter. Addison-Wesley, 2002. – ISBN 978–3–8273–7044–0
+\noindent [Goossens u. a. 2010] Goossens, Michel ; Mittelbach, Frank ; Samarin, Alexander: Der LaTeX Begleiter. Addison-Wesley, 2010. – ISBN 978–3–8273–7044–0

exercises/literature/task.tex

@@ -6,7 +6,7 @@
   handbooks:
   \begin{itemize}
     \item Dilip Datta (2017): \LaTeX\ in 24 Hours. A Practical Guide for Scientific Writing.
-    \item Frank Mittelbach / Michel Goossens (2002): Der \LaTeX-Begleiter.
+    \item Frank Mittelbach / Michel Goossens (2010): Der \LaTeX-Begleiter.
   \end{itemize}
   \item Add the Bib\TeX{} entries to the newly created Bib\TeX{} files.
   \item Assign unique and meaningful Bib\TeX{} keys.