diff --git a/README.md b/README.md
index 6ab34cc..bdbc184 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,13 @@ or [Fork me on GitHub](https://github.com/gto76/python-cheatsheet).
 
 Contents
 --------
-1. **Collections: [List](#list), [Dict](#dictionary), [Set](#set), [Range](#range), [Enumerate](#enumerate), [Namedtuple](#namedtuple), [Iterator](#iterator), [Generator](#generator)**
+1. **Collections: [List](#list), [Dict](#dictionary), [Set](#set), [Range](#range), [Enumerate](#enumerate), [Namedtuple](#named-tuple), [Iterator](#iterator), [Generator](#generator)**
 2. **Types: [Type](#type), [String](#string), [Regex](#regex), [Format](#format), [Numbers](#numbers), [Combinatorics](#combinatorics), [Datetime](#datetime)ᴺᴱᵂ**
-3. **Syntax: [Args](#arguments), [Splat](#splatoperator), [Inline](#inline), [Closure](#closure), [Decorator](#decorator), [Class](#class), [Enum](#enum), [Exceptions](#exceptions)**
-4. **System: [Print](#print), [Input](#input), [Command_Line_Arguments](#commandlinearguments), [Open](#open), [Path](#path)ᴺᴱᵂ, [Command_Execution](#commandexecution)**
-5. **Data: [CSV](#csv), [JSON](#json), [Pickle](#pickle), [SQLite](#sqlite), [Bytes](#bytes), [Struct](#struct), [Array](#array), [MemoryView](#memoryview), [Deque](#deque)**
+3. **Syntax: [Args](#arguments), [Splat](#splat-operator), [Inline](#inline), [Closure](#closure), [Decorator](#decorator), [Class](#class), [Enum](#enum), [Exceptions](#exceptions)**
+4. **System: [Print](#print), [Input](#input), [Command_Line_Arguments](#command-line-arguments), [Open](#open), [Path](#path)ᴺᴱᵂ, [Command_Execution](#command-execution)**
+5. **Data: [CSV](#csv), [JSON](#json), [Pickle](#pickle), [SQLite](#sqlite), [Bytes](#bytes), [Struct](#struct), [Array](#array), [MemoryView](#memory-view), [Deque](#deque)**
 6. **Advanced: [Threading](#threading), [Introspection](#introspection), [Metaprograming](#metaprograming), [Operator](#operator), [Eval](#eval), [Coroutine](#coroutine)**
-7. **Libraries: [Progress_Bar](#progressbar), [Plot](#plot), [Table](#table), [Curses](#curses), [Logging](#logging)ᴺᴱᵂ, [Scraping](#scraping), [Web](#web), [Profile](#profile), [NumPy](#numpy), [Image](#image), [Audio](#audio)**
+7. **Libraries: [Progress_Bar](#progress-bar), [Plot](#plot), [Table](#table), [Curses](#curses), [Logging](#logging)ᴺᴱᵂ, [Scraping](#scraping), [Web](#web), [Profile](#profile), [NumPy](#numpy), [Image](#image), [Audio](#audio)**
 
 
 Main