diff --git a/README.md b/README.md
index 75f701c37..daa8cd3fc 100644
--- a/README.md
+++ b/README.md
@@ -3220,11 +3220,28 @@ a  1  2
 b  3  4
 ```
 
+```python
+x_col   = [1, 3]
+y_col   = [2, 4]
+<DF>    = pd.DataFrame({'x': x_col, 'y': y_cal}, index=['a', 'b'])
+<DF>.columns                                   # Get the column names: {x, y}
+<DF>.index                                     # Get the index values: {a, b}
+```
+
 ```python
 <DF>    = pd.DataFrame(<list_of_rows>)         # Rows can be either lists, dicts or series.
 <DF>    = pd.DataFrame(<dict_of_columns>)      # Columns can be either lists, dicts or series.
 ```
 
+Descriptive information about dataframe:
+```python
+<DF>.head(n=5)                                 # Return first n occurrences
+<DF>.dtypes                                    # Return data types of each columns
+<DF>.isna/isnull()                             # Return empty values in <DF>
+<DF>.describe()                                # Get statistical description of <DF> (both numeric & object)
+```
+
+For selection of multiple elements:
 ```python
 <el>    = <DF>.loc[row_key, column_key]        # Or: <DF>.iloc[row_index, column_index]
 <Sr/DF> = <DF>.loc[row_key/s]                  # Or: <DF>.iloc[row_index/es]
@@ -3232,6 +3249,11 @@ b  3  4
 <DF>    = <DF>.loc[row_bools, column_bools]    # Or: <DF>.iloc[row_bools, column_bools]
 ```
 
+For selection of single element:
+```python
+<el>    = <DF>.at[row_index, column_key]
+```
+
 ```python
 <Sr/DF> = <DF>[column_key/s]                   # Or: <DF>.column_key
 <DF>    = <DF>[row_bools]                      # Keeps rows as specified by bools.
@@ -3249,6 +3271,7 @@ b  3  4
 <DF>    = <DF>.sort_index(ascending=True)      # Sorts rows by row keys. Use `axis=1` for cols.
 <DF>    = <DF>.sort_values(column_key/s)       # Sorts rows by the passed column/s. Same.
 ```
+Those methods have optional parameter *inplace*, which would make the changes in the object from they are called and return None.
 
 #### DataFrame — Merge, Join, Concat:
 ```python