diff --git a/README.md b/README.md
index dcd6b9d..affcd8a 100644
--- a/README.md
+++ b/README.md
@@ -7,10 +7,27 @@
 > [!NOTE]
 > Source files will be converted if are changed or not exist in target path
 
+## Table of Contents
+- [Overview](#overview)
+- [Repository Content](#repository-content)
+- [MacOS APP](#macos-app)
+- [Terminal Commands](#terminal-commands)
+  - [Basic Usage](#basic-usage)
+  - [Options](#options)
+  - [Examples](#examples)
+  - [Log Levels](#log-levels)
+  - [Notes](#notes)
+  - [Settings](#settings)
+- [Just](#just)
+  - [Recipes](#recipes)
+  - [Main Values](#main-values)
+- [For Development](#for-development)
+- [To work on app](#to-work-on-app)
+
+## Overview
 
 The following extensions will be converted via LibreOffice **soffice** command.
 
-
 **FILES_TO_CONVERT**: odt, doc, docx
 
 The following extensions or path will be copied to **target** with any conversion
@@ -21,7 +38,7 @@ The following path will be ignored during [clean_target_directory](src/directory
 
 **PATHS_TO_IGNORE**: .DS_Store, .syncthing, .sync-conflict-, .stfolder, .stversions
 
-## Repository content
+## Repository Content
 
 <pre>
 .
@@ -77,6 +94,70 @@ MACOS_APP_PATH := "DirOdtToPdf.app"
 
 <small>In MacOS [install.command](macos/install.command) copy above commands to BIN_APP_PATH(/usr/local/bin)</small>
 
+## Basic Usage
+```bash
+dir-odt-to-pdf <SOURCE_DIR> <TARGET_DIR> [OPTIONS]
+```
+
+### Options
+```
+Required Arguments:
+  <SOURCE_DIR>          Source directory with .odt, .doc, or .docx files
+  <TARGET_DIR>          Target directory for PDFs converted files
+
+Optional Arguments:
+  --log-file <path>     Write logs to file instead of console
+  --log-level <level>   Set log level (error/warn/info/debug/trace)
+                        Default: info
+  --append-log          Append to existing log file instead of overwriting
+  -h, --help            Print help
+  -V, --version         Print version
+```
+
+### Examples
+
+1. Basic conversion (logs to console):
+```bash
+dir-odt-to-pdf /path/to/documents /path/to/pdfs
+```
+
+2. Log to file:
+```bash
+dir-odt-to-pdf /path/to/documents /path/to/pdfs --log-file conversion.log
+```
+
+3. Debug level logging to console:
+```bash
+dir-odt-to-pdf /path/to/documents /path/to/pdfs --log-level debug
+```
+
+4. Append to existing log file with custom level:
+```bash
+dir-odt-to-pdf /path/to/documents /path/to/pdfs \
+    --log-file conversion.log \
+    --log-level debug \
+    --append-log
+```
+
+### Log Levels
+
+Available log levels in increasing verbosity:
+- `error`: Only errors that prevent normal operation
+- `warn`: Warnings about potential issues
+- `info`: General progress information (default)
+- `debug`: Detailed information for troubleshooting
+- `trace`: Very detailed debugging information
+
+### Notes
+
+- When `--log-file` is specified, output goes only to the file (not to console)
+- Without `--append-log`, the log file is overwritten each time
+- The program will create the target directory if it doesn't exist
+- Existing PDF files are only updated if the source file is newer
+
+
+### Settings 
+
 [justfile](justfile) settings:
 
 ```bash
@@ -132,6 +213,11 @@ BIN_APP_PATH := "/usr/local/bin"
 
 ## For Development
 
+> [!NOTE]
+> [Command-line-options](#options) can be added 
+> RUST_LOG environment variable controls env_logger output
+
+
 | Recipe | alias | Descripción  | parameters |
 |--------|-------|--------------|--------------------|
 | **build** | b | run cargo | cargo arguments |
@@ -143,7 +229,7 @@ BIN_APP_PATH := "/usr/local/bin"
 | **doc** | d | run cargo doc --open --no-deps | cargo arguments |
 | **benchmark** | be | run cargo bench | cargo arguments |
 | **test*** | be | run cargo t | cargo arguments |
-| **runtest** | rt | run [run.sh](run.sh) script using [test](test) directories for **SOURCE** and **DEST** parametets | |
+| **runtest** | rt | run [run.sh](run.sh) script using [test](test) directories for **SOURCE** and **DEST** parametets <br> add [Command-line-options](#options) | |
 
 ## To work on app