diff --git a/includes/libft.h b/includes/libft.h
new file mode 100644
index 0000000..f3f0871
--- /dev/null
+++ b/includes/libft.h
@@ -0,0 +1,36 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   libft.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ztisnes <ztisnes@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/09/21 21:47:24 by ztisnes           #+#    #+#             */
+/*   Updated: 2018/02/03 18:35:41 by ztisnes          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef LIBFT_H
+# define LIBFT_H
+
+# include <unistd.h>
+# include <stdlib.h>
+# include <string.h>
+
+/*
+** Linked List structure
+*/
+
+typedef struct		s_list
+{
+	void			*content;
+	size_t			content_size;
+	struct s_list	*next;
+}					t_list;
+
+t_stack				*init_stack(void);
+void				push_stack(t_stack *stack, void *content);
+void				*pop_stack(t_stack *stack);
+void				*peek(t_stack *stack);
+int					isEmpty_stack(t_stack *stack);
+#endif
diff --git a/includes/push_swap.h b/includes/push_swap.h
new file mode 100644
index 0000000..27f4684
--- /dev/null
+++ b/includes/push_swap.h
@@ -0,0 +1,16 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   push_swap.h                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ztisnes <ztisnes@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/02/03 18:34:37 by ztisnes           #+#    #+#             */
+/*   Updated: 2018/02/03 18:35:56 by ztisnes          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef PUSH_SWAP_H
+# define PUSH_SWAP_H
+
+#endif
diff --git a/srcs/stack.c b/srcs/stack.c
new file mode 100644
index 0000000..9556282
--- /dev/null
+++ b/srcs/stack.c
@@ -0,0 +1,67 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   stack.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ztisnes <ztisnes@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/01/09 19:57:20 by ztisnes           #+#    #+#             */
+/*   Updated: 2018/02/03 17:48:15 by ztisnes          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+/*
+** Stacks are abstract data structures which helps in the order of elements with
+** popping (removing) and pushing (inserting) elements Stacks are just arrays
+**
+*/
+typedef struct		s_stack
+{
+	struct s_list	*top;
+}					t_stack;
+
+t_stack				*init_stack(void)
+{
+	t_stack			*node;
+	node = (t_stack *)malloc(sizeof(t_stack));
+	node->top = NULL;
+	return (node);
+}
+
+void				push_stack(t_stack *stack, void *content)
+{
+	t_list			*node;
+
+	node = (t_list *)malloc(sizeof(t_list));
+	node->content = content;
+	node->next = stack->top;
+	stack->top = node;
+}
+
+void				*pop_stack(t_stack *stack)
+{
+	t_list			*next;
+	void			*anything;
+
+	if (stack->top == NULL)
+		return (NULL);
+	next = stack->top->next;
+	anything = stack->top->content;
+	free(stack->top);
+	stack->top = next;
+	return (anything);
+}
+
+void				*peek_stack(t_stack *stack)
+{
+	if (stack->top == NULL)
+		return (NULL);
+	return (stack->top->content);
+}
+
+int					isEmpty_stack(t_stack *stack)
+{
+	return (stack->top == NULL);
+}