diff --git a/IUM_00.Organizacyjne.ipynb b/IUM_00.Organizacyjne.ipynb
index d47040b..319b732 100644
--- a/IUM_00.Organizacyjne.ipynb
+++ b/IUM_00.Organizacyjne.ipynb
@@ -150,7 +150,6 @@
    "source": [
     "## Obecność\n",
     "\n",
-    "# ZMIANY! #\n",
     "Zgodnie z oficjalnymi zasadami obowiązującymi w projekcie AITech, dopuszczalna liczba nieobecności na zajęciach wynosi 3 (obowiązkowa obecność na 80% zajęć).\n",
     "Powyżej 3 nieobecności przemiot nie może być zaliczony."
    ]
diff --git a/IUM_01.Wprowadzenie.ipynb b/IUM_01.Wprowadzenie.ipynb
index 58be5e9..a798c45 100644
--- a/IUM_01.Wprowadzenie.ipynb
+++ b/IUM_01.Wprowadzenie.ipynb
@@ -54,9 +54,7 @@
     }
    },
    "source": [
-    "<img style=\"margin: auto\" width=\"50%\" src=\"img/ml-vs-classic.png\"/>\n",
-    "\n",
-    "<sub>Źródło: https://www.reddit.com/r/learnmachinelearning/comments/hkcf4o/traditional_programming_vs_machine_learning/</sub>"
+    "<img style=\"margin: auto\" width=\"50%\" src=\"img/ml-vs-classic.png\"/>"
    ]
   },
   {
diff --git a/IUM_02.Dane.ipynb b/IUM_02.Dane.ipynb
index beb3b0a..22cf3c5 100644
--- a/IUM_02.Dane.ipynb
+++ b/IUM_02.Dane.ipynb
@@ -146,7 +146,9 @@
     "- Amazon Mechanical Turk: https://www.mturk.com/\n",
     "- Yandex Toloka\n",
     "- reCAPTCHA\n",
-    "<img src=\"https://upload.wikimedia.org/wikipedia/commons/8/8b/Tuerkischer_schachspieler_windisch4.jpg\">\n"
+    "<img src=\"img/Tuerkischer_schachspieler_windisch4.jpg\">\n",
+    "\n",
+    "<sub>Źródło: https://en.wikipedia.org/wiki/Mechanical_Turk#/media/File:Tuerkischer_schachspieler_windisch4.jpg</sub>"
    ]
   },
   {
@@ -184,9 +186,11 @@
     " - Iris Setosa\n",
     " - Iris Versicolour\n",
     " - Iris Virginica\n",
-    " \n",
-    "<img src=IUM_02/iris.png>\n",
-    "https://www.kaggle.com/vinayshaw/iris-species-100-accuracy-using-naive-bayes"
+    "  \n",
+    "<img src=IUM_02/iris.png/>\n",
+    "\n",
+    "<sub>Źródło: https://www.kaggle.com/vinayshaw/iris-species-100-accuracy-using-naive-bayes<br>\n",
+    "Licencja: [Apache 2.0](http://www.apache.org/licenses/LICENSE-2.0)</sub>"
    ]
   },
   {
diff --git a/IUM_02/iris.png b/IUM_02/iris.png
new file mode 100644
index 0000000..545dfc5
Binary files /dev/null and b/IUM_02/iris.png differ
diff --git a/img/Tuerkischer_schachspieler_windisch4.jpg b/img/Tuerkischer_schachspieler_windisch4.jpg
new file mode 100644
index 0000000..63e0f4f
Binary files /dev/null and b/img/Tuerkischer_schachspieler_windisch4.jpg differ
diff --git a/img/ml-vs-classic.drawio.svg b/img/ml-vs-classic.drawio.svg
new file mode 100644
index 0000000..041e274
--- /dev/null
+++ b/img/ml-vs-classic.drawio.svg
@@ -0,0 +1,4 @@
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diff --git a/img/ml-vs-classic.drawio.xml b/img/ml-vs-classic.drawio.xml
new file mode 100644
index 0000000..c976336
--- /dev/null
+++ b/img/ml-vs-classic.drawio.xml
@@ -0,0 +1 @@
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diff --git a/img/ml-vs-classic.png b/img/ml-vs-classic.png
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