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diff --git a/main.tex b/main.tex
index 4b0cc1f..3691b3b 100644
--- a/main.tex
+++ b/main.tex
@@ -9,6 +9,13 @@
 \usepackage{graphicx}
 \usepackage{emoji}
 
+\newcommand\blfootnote[1]{%
+  \begingroup
+  \renewcommand\thefootnote{}\footnote{#1}%
+  \addtocounter{footnote}{-1}%
+  \endgroup
+}
+
 \title{Software Libre}
 
 \subtitle{¿Por qué é tan importante?}
@@ -195,6 +202,111 @@
 			\end{alertblock}
 		}
 	\end{frame}
+
+	\section{Facendo software libre}
+	\subsection{Licenzas}
+	\begin{frame}
+		\frametitle{Cal describe mellor a túa situación?}
+		\begin{columns}
+		\begin{column}{0.33\textwidth}
+            \centering
+            \includegraphics[width=0.5\textwidth]{img/icons/community} \\
+            \large{\textbf{Necesito traballar nunha comunidade}} \\
+            Utiliza a licenza preferida pola comunidade á que estás contribuíndo ou da que dependes. O teu proxecto vai encaixar perfectamente.
+        \end{column}
+
+        \begin{column}{0.33\textwidth}
+            \centering
+            \includegraphics[width=0.5\textwidth]{img/icons/three-arrows} \\
+            \large{\textbf{Quero que sexa sinxela e permisiva}} \\
+            A licenza \textbf{\href{https://choosealicense.com/licenses/mit/}{MIT}} é breve e directa. Permite ás persoas facer case calquera cousa co teu proxecto, como crear e distribuir versións de código pechado.
+        \end{column}
+        
+        \begin{column}{0.33\textwidth}
+            \centering
+            \includegraphics[width=0.5\textwidth]{img/icons/circular} \\
+            \large{\textbf{Impórtame que se compartan as melloras}} \\
+            A \textbf{\href{https://choosealicense.com/licenses/gpl-3.0/}{GNU GPLv3}} tamén permite facer case calquera cousa co teu proxecto, \textit{agás} distribuir versións de código pechado.
+        \end{column}
+    	\end{columns}
+
+		\blfootnote{Fortemente inspirado en \textit{choosealicense.com} \cite{choosealicensecom}}
+	\end{frame}
+
+	\begin{frame}
+		\frametitle{Controversia coa GPL}
+
+		\begin{itemize}        
+			\item<1-> \textbf{Controversias principais:}
+			\begin{itemize}
+				\item \textbf{Infecciosa:} A inclusión de código con licenza GPL en calquera proxecto require a mesma licenza neste tamén.
+				\item \textbf{Restricións de uso:} Restricións excesivas, limitando a capacidade de integración con software propietario.
+				\item \textbf{Compatibilidade:} Pode ser incompatible con outras licenzas, dificultando a colaboración entre proxectos.
+				\item \textbf{Modelo de negocio:} As empresas deben adaptarse a un modelo de negocio que non sempre é viable.
+			\end{itemize}
+			
+			\item<2-> \textbf{Alternativas:}
+			\begin{itemize}
+				\item \textbf{MIT License}
+				\item \textbf{Apache License 2.0}
+				\item \textbf{Mozilla Public License (MPL)}
+			\end{itemize}
+		\end{itemize}
+	\end{frame}
+
+	\subsection{Forxas}
+	\begin{frame}
+		\begin{columns}
+		\column{0.5\textwidth}
+			\begin{itemize}
+				\item<1-4>\href{https://github.com}{GitHub}?
+				\begin{itemize}
+					\item<2-4> Mellor non
+					\item<3-4> Non é de código libre
+					\item<4> Non respeta completamente o código libre
+				\end{itemize}
+				\item<5-> Alternativas?
+				\begin{itemize}
+					\item<6-> \href{https://gitlab.com}{GitLab}
+					\item<7-> \href{https://codeberg.org}{CodeBerg}
+					\item<8-> \href{https://sr.ht}{SourceHut}, \textit{the hacker's forge}
+				\end{itemize}
+			\end{itemize}
+		
+		\column{0.5\textwidth}
+		\only<1-4>{
+			\begin{figure}
+				\centering
+				\includegraphics[width=0.8\linewidth]{img/logos/github}
+				\label{fig:logo-github}
+			\end{figure}
+		}
+
+		\only<6>{
+			\begin{figure}
+				\centering
+				\includegraphics[width=0.8\linewidth]{img/logos/gitlab}
+				\label{fig:logo-gitlab}
+			\end{figure}
+		}
+
+		\only<7>{
+			\begin{figure}
+				\centering
+				\includegraphics[width=0.8\linewidth]{img/logos/codeberg}
+				\label{fig:logo-codeberg}
+			\end{figure}
+		}
+
+		\only<8>{
+			\begin{figure}
+				\centering
+				\includegraphics[width=0.8\linewidth]{img/logos/sourcehut}
+				\label{fig:logo-sourcehut}
+			\end{figure}
+		}
+		\end{columns}
+	\end{frame}
 	
 \section{Conclusións}
 	\begin{frame}
diff --git a/references.bib b/references.bib
index 6c9aee1..afc3ed2 100644
--- a/references.bib
+++ b/references.bib
@@ -1,27 +1,34 @@
 @online{gnu_free_sw,
-	author       = {GNU \& FSF},
-	title        = {The Free Software Definition},
-	url          = {https://www.gnu.org/philosophy/free-sw.en.html},
-	urldate      = {2025-08-31}
+  author  = {GNU \& FSF},
+  title   = {The Free Software Definition},
+  url     = {https://www.gnu.org/philosophy/free-sw.en.html},
+  urldate = {2025-08-31}
 }
 
 @online{gnu_open_source,
-	author = {Richard Stallman (GNU)},
-	title = {Why Open Source Misses the Point of Free Software},
-	url = {https://www.gnu.org/philosophy/open-source-misses-the-point.html},
-	urldate = {2025-08-31}
+  author  = {Richard Stallman (GNU)},
+  title   = {Why Open Source Misses the Point of Free Software},
+  url     = {https://www.gnu.org/philosophy/open-source-misses-the-point.html},
+  urldate = {2025-08-31}
 }
 
 @online{open_source_def,
-	author = {Open Source Initiative},
-	title = {The Open Source Definition},
-	url = {https://opensource.org/osd},
-	urldate = {2025-08-31}
+  author  = {Open Source Initiative},
+  title   = {The Open Source Definition},
+  url     = {https://opensource.org/osd},
+  urldate = {2025-08-31}
 }
 
 @online{gnu_linux,
-	author = {Richard Stallman (GNU)},
-	title = {Linux and the GNU System},
-	url = {https://www.gnu.org/gnu/linux-and-gnu.html},
-	urldate = {2025-08-31}
+  author  = {Richard Stallman (GNU)},
+  title   = {Linux and the GNU System},
+  url     = {https://www.gnu.org/gnu/linux-and-gnu.html},
+  urldate = {2025-08-31}
+}
+
+@online{choosealicensecom,
+  author  = {GitHub Inc.},
+  title   = {Choose an open source license},
+  url     = {https://choosealicense.com},
+  urldate = {2025-09-11}
 }
\ No newline at end of file