diff --git a/Installation.md b/Installation.md
index b5f3597..2411ce5 100644
--- a/Installation.md
+++ b/Installation.md
@@ -1,6 +1,6 @@
-# 7-Zip
+## 7-Zip
 
-## Windows
+### Windows
 
 First install 7z from https://www.7-zip.org/ or with command line:
 ```
@@ -14,19 +14,19 @@ setx path "%path%;C:\Program Files\7-Zip"
 ```
 
 Be sure to close and re-open KCC so it sees the updated PATH.
-## Mac
+### Mac
 with [Homebrew](https://brew.sh/) installed
 ```
 $ brew install p7zip
 ```
 
-# Kindlegen
+## Kindlegen
 
-## Windows
+### Windows
 
 Move `kindlegen.exe` from Kindle Previewer into the same folder as KCC.
 
-## Mac
+### Mac
 And to fix the KindleGen missing warning, with [Homebrew](https://brew.sh/) installed:
 
 ```bash
@@ -38,7 +38,7 @@ or
 brew install --cask kindle-comic-creator
 ```
 
-### DOWNLOADS
+## DOWNLOADS
 You can find the latest binary at the following link:
 
 - **https://github.com/ciromattia/kcc/releases**
@@ -123,13 +123,15 @@ $ docker run --entrypoint /opt/kcc/kcc-c2p.py --rm -v "$(pwd):/app" ghcr.io/ciro
 
 ### INSTALL FROM SOURCES
 
-Easiest to use [GitHub Desktop](https://desktop.github.com) to clone the KCC repo. From GitHub Desktop, open a Command Prompt/Terminal Window in the repo.
+Easiest to use [GitHub Desktop](https://desktop.github.com) to clone the KCC repo. From GitHub Desktop, open a Command Prompt (Windows)/Terminal (Mac) window in the repo. 
 
-We recommend using [virtual environments](https://docs.python.org/3/tutorial/venv.html) to manage dependencies. A code editor like [VS Code](https://code.visualstudio.com) will automatically activate virtual environments. 
+Depending on your system [Python](https://www.python.org) may be called either `python` or `python3`.
+
+We recommend using [virtual environments](https://docs.python.org/3/tutorial/venv.html) to manage dependencies. (Optional: A code editor like [VS Code](https://code.visualstudio.com) will automatically re-activate virtual environments.)
 
 #### Windows
 
-One time setup: Setup a virtual environment and run:
+One time setup and running for the first time:
 ```
 python -m venv venv
 venv\Scripts\activate.bat
@@ -146,7 +148,7 @@ python kcc.py
 
 #### Mac
 
-One time setup: Setup a virtual environment and run:
+One time setup and running for the first time:
 ```
 python3 -m venv venv
 source venv/bin/activate