fix typos

Author: fedorov

notebooks/getting_started/part2_searching_basics.ipynb

@@ -21,7 +21,7 @@
         "\n",
         "This notebook is part of [the \"Getting started with IDC\" notebook series](https://github.com/ImagingDataCommons/IDC-Examples/blob/master/notebooks/getting_started) introducing NCI Imaging Data Commons to the users who want to interact with IDC programmatically.\n",
         "\n",
-        "In [Part 1](https://github.com/ImagingDataCommons/IDC-Examples/blob/master/notebooks/getting_started/part1_prerequisites.ipynb) of this tutorial series, you learned how to complete the prerequisites that are required to be able to search IDC data. If you have not completed Part 1, it's ok - this notebook is self-contained, and you don't need to go back to Part 1! This notebook continues at the beginner level, guding you with how to use [`idc-index`](https://github.com/ImagingDataCommons/idc-index), a python package that aims to simplify access to the data available from NCI Imaging Data Commons.\n",
+        "In [Part 1](https://github.com/ImagingDataCommons/IDC-Examples/blob/master/notebooks/getting_started/part1_prerequisites.ipynb) of this tutorial series, you learned how to complete the prerequisites that are required to be able to search IDC data. If you have not completed Part 1, it's ok - this notebook is self-contained, and you don't need to go back to Part 1! This notebook continues at the beginner level, guiding you with how to use [`idc-index`](https://github.com/ImagingDataCommons/idc-index), a python package that aims to simplify access to the data available from NCI Imaging Data Commons.\n",
         "\n",
         "Upon completion of this tutorial, you will learn:\n",
         "* how to download images from IDC\n",
@@ -160,7 +160,7 @@
         "id": "IFxe5O3oAOgE"
       },
       "source": [
-        "In the following cell, we pass the identifier of a study to the function `download_from_selection()` to getch the corresponding files. For the sake of the tutorial, please proceed with the identifier used in the following cell. You can experiment with using the identifiers you copied from the portal after you completed the notebook.\n"
+        "In the following cell, we pass the identifier of a study to the function `download_from_selection()` to fetch the corresponding files. For the sake of the tutorial, please proceed with the identifier used in the following cell. You can experiment with using the identifiers you copied from the portal after you completed the notebook.\n"
       ]
     },
     {
@@ -2771,7 +2771,7 @@
       "source": [
         "### Getting license information for the selected images\n",
         "\n",
-        "Each of the files avialable from IDC is accompanied by a license that defines the terms of use. In most cases, those are generic, broadly accepted Creative Commons licenses.\n",
+        "Each of the files available from IDC is accompanied by a license that defines the terms of use. In most cases, those are generic, broadly accepted Creative Commons licenses.\n",
         "\n",
         "The abbreviated license code is available in the `license_short_name` column. In the following cell we get the list of various licenses that are encountered across all of the selected series. You will see that the only license encountered is a Creative Commons By Attribution license https://creativecommons.org/licenses/by/3.0/deed.en, which does not restrict commercial use, but requires you to acknowledge the author if you reuse the item.\n",
         "\n",