updated documentation

docs/source/getting_started.md

 # Getting Started
 
+BiTIA CLI is the Command Interface tool helpful in getting user inputs with commands and required files, directories etc.
 
-## Installation
-BiTIA is available on PyPi.
+This submits jobs to the server, which contains bitia-runner that works on the job and produce results
 
-To get started with using BiTIA, you should [install Python] and make sure [python-pip] is installed with it on your system.
+**To work with BiTIA, we need to install bitia-cli and submit jobs to the server**
+## Installing bitia
+Installing bitia is very simple, you only need to have [python-pip] installed in your system
 
-[install Python]: https://realpython.com/installing-python/
-[python-pip]: https://pypi.org/project/pip/ 
-### Ensure you have a working pip
+BiTIA CLI is available on [PyPi] as [BiTIA].
+#### Ensure you have a working pip
 
 As a first step, you should check that you have a working Python with pip
 installed. This can be done by running the following commands and making
@@ -26,7 +27,12 @@ If that worked, congratulations! You have a working pip in your environment.
 
 To Install **BiTIA** using pip:
 
-```bash
+```
 $ python3 -m pip install bitia
 ```
 
+
+[BiTIA]: https://pypi.org/project/bitia/
+[Pypi]: https://pypi.org/
+[install Python]: https://realpython.com/installing-python/
+[python-pip]: https://pypi.org/project/pip/ 
\ No newline at end of file

docs/source/index.md

 ## BioInformatics Tool for Infrastructure Automation (BiTIA)
 
+
 ```{image} https://img.shields.io/pypi/v/bitia.svg
 :target: https://pypi.python.org/pypi/bitia
 ```
 ```{image} https://img.shields.io/pypi/pyversions/bitia.svg
 :target: https://www.python.org
 ```
+BiTIA is a tool that simplifies the infrastructure required to run complex bioinformatics pipelines. BiTIA plays well with the existing pipeline solution such as snakement.
 
-
-BiTIA makes it easy to orchestrate the infrastructure required to run 
-complex bioinformatics pipelines. BiTIA plays well with existing pipeline
-solution such as snakemake. [See some examples]
+BiTIA has two components: bitia-cli and bitia-runner.
+- **bitia-cli**
+Creates a zip file of the user input(pipeline) containing a unique hash and ships it to the server.
+- **bitia-runner**
+    Runs following works in the server
+    - Creates a docker container with the user input
+    - Runs the pipeline
+    - Sends log to the user
+    - Sends link of results(artifacts) to the user
+    - Interacts with common cache for reading data/reference files 
 
 
 [see some examples]: examples
@@ -18,7 +26,6 @@ solution such as snakemake. [See some examples]
 ```{toctree}
 :caption: Getting started
 :hidden: true
-:maxdepth: 1
 :name: getting_started
 
 getting_started
@@ -26,7 +33,7 @@ developer
 ```
 
 
-If you want to learn how to use BiTIA, check out the following resources:
+If you want to learn how to use BiTIA and installation, check out the following resources:
 
 - [Getting Started](getting_started.md)