Update server IP

basics/basics_handouts.tex

@@ -23,8 +23,9 @@ Open \url{http://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html} in
 your browser. It may be faster to google for putty.
 \medskip
 
-Download and run \href{https://the.earth.li/~sgtatham/putty/latest/w32/putty.exe}{\textbf{putty.exe}.
-(Alternative binary files, the SSH and Telnet client itself)}.
+Download and run \href{https://the.earth.li/~sgtatham/putty/latest/w32/putty.exe}{\textbf{putty.exe}},
+the standalone executable and not the installer (Alternative binary files,
+the SSH and Telnet client itself).
 \medskip
 
 Introduce the education server IP address \textbf{145.88.35.11} as destination.
@@ -135,7 +136,6 @@ newly-created directory to make a new repository.
 \bigskip
 
 Check the status of your repository.
-\bigskip
 
 \subsubsection*{Your first commit}
 Create a new file named ``README'' (with an editor, or by using the
@@ -143,32 +143,36 @@ Create a new file named ``README'' (with an editor, or by using the
 \begin{itemize}
   \item \emph{Question:} What is the status of this new file?
 \end{itemize}
-\bigskip
+\medskip
 
 Stage this file for the next commit using ``\gitcmd\ \cmd{add}''.
 \begin{itemize}
   \item \emph{Question:} What is the status of this file now?
 \end{itemize}
-\bigskip
+\medskip
 
 Commit your changes.
 \begin{itemize}
   \item \emph{Question:} What happened to the status?
 \end{itemize}
-\bigskip
 
 \subsubsection*{Manipulation in the staging area}
-Edit your file and stage it.
-\bigskip
+Edit your file. Check the repository status.
+\medskip
 
-Now remove the file from the staging area.
-\bigskip
+Stage your modified file. Check the repository status.
+\medskip
 
-Stage the file and commit.
-\bigskip
+Now remove the file from the staging area. Check the repository status.
+\medskip
+
+Discard the changes performed to the file. Check the repository status.
+\medskip
+
+Edit again the file, stage it, and commit.
 
 \subsubsection*{Working with versions}
-Edit your file again and commit it one more time.
+Edit your file again and commit one more time.
 \bigskip
 
 Now you change your mind and you want to restore the version stored in the