diff --git a/ml2/3_1_Read_Data.ipynb b/ml2/3_1_Read_Data.ipynb
index 6580da7..76e0ed4 100644
--- a/ml2/3_1_Read_Data.ipynb
+++ b/ml2/3_1_Read_Data.ipynb
@@ -50,30 +50,30 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In this session we will work with the Titanic dataset. This dataset is provided by [Kaggle](http://www.kaggle.com). Kaggle is a crowdsourcing platform that organizes competitions where researchers and companies post their data and users compete to obtain the best models.\n",
+    "In this session, we will work with the Titanic dataset. This dataset is provided by [Kaggle](http://www.kaggle.com). Kaggle is a crowdsourcing platform that organizes competitions where researchers and companies post their data and users compete to obtain the best models.\n",
     "\n",
     "![Titanic](images/titanic.jpg)\n",
     "\n",
     "\n",
-    "The main objective is predicting which passengers survived the sinking of the Titanic.\n",
+    "The main objective is to predict which passengers survived the sinking of the Titanic.\n",
     "\n",
     "The data is available [here](https://www.kaggle.com/c/titanic/data). There are two files, one for training ([train.csv](files/data-titanic/train.csv)) and another file for testing [test.csv](files/data-titanic/test.csv). A local copy has been included in this notebook under the folder *data-titanic*.\n",
     "\n",
     "\n",
     "Here follows a description of the variables.\n",
     "\n",
-    "|Variable | Description| Values|\n",
-    "|-------------------------------|\n",
-    "| survival| Survival| (0 = No; 1 = Yes)|\n",
-    "|Pclass |Name | |\n",
-    "|Sex  |Sex | male, female|\n",
-    "|Age |Age|\n",
-    "|SibSp |Number of Siblings/Spouses Aboard||\n",
-    "|Parch |Number of Parents/Children Aboard||\n",
-    "|Ticket|Ticket Number||\n",
-    "|Fare            |Passenger Fare||\n",
-    "|Cabin           |Cabin||\n",
-    "|Embarked        |Port of Embarkation| (C = Cherbourg; Q = Queenstown; S = Southampton)|\n",
+    "|  Variable  |          Description            |       Values    |\n",
+    "|------------|---------------------------------|-----------------|\n",
+    "|  survival  |           Survival              |(0 = No; 1 = Yes)|\n",
+    "|    Pclass  |             Name                |                 |\n",
+    "|     Sex    |              Sex                |   male, female  |\n",
+    "|     Age    |              Age                |                 |\n",
+    "|    SibSp   |Number of Siblings/Spouses Aboard|                 |\n",
+    "|     Parch  |Number of Parents/Children Aboard|                 |\n",
+    "|     Ticket |        Ticket Number            |                 |\n",
+    "|     Fare   |       Passenger Fare            |                 |\n",
+    "|     Cabin  |            Cabin                |                 |\n",
+    "|   Embarked |       Port of Embarkation       | (C = Cherbourg; Q = Queenstown; S = Southampton)|\n",
     "\n",
     "\n",
     "The definitions used for SibSp and Parch are:\n",