index.rst fixed

docs/index.rst

@@ -3,8 +3,38 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Nebulas Wiki
-============
+Overview
+========
+
+Welcome to the open-source Nebulas wiki!
+----------------------------------------
+
+
+Nebulas is the next-generation public blockchain, aiming for a continuously improving ecosystem. Based on its blockchain valuation mechanism, Nebulas proposes future-oriented incentive and consensus systems, and the ability to self-evolve without forking.
+
+Nebulas community is open and everyone can be a contributor and build a decentralized world with us.
+
+The Nebulas wiki is a collaboration tool for the community to publish various documents in a collaborative manner. Include [using guides](wiki-using-guide.html), [developing guides](dapp-development/README.html), [learning resources](dapp-development/learning-resources.html), and other useful documents. 
+
+
+
+Use Wiki
+--------
+
+
+`Mainnet <go-nebulas/README.html>`_
+````````````````````````````````````
+
+`Dapps <dapp-development/README.html>`_
+`````````````````````````````````````````
+
+`Ecosystem <community-ecosystem/README.html>`_
+````````````````````````````````````````````````
+
+`Get Involved <how-to-contribute.html>`_
+``````````````````````````````````````````
+
+
 
 .. toctree::
     :maxdepth: 2
@@ -22,10 +52,3 @@ Nebulas Wiki
     licensing/README.rst
 
 
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
-

docs/wiki-using-guide.md

@@ -11,7 +11,7 @@ TBA
 
 [How to use Markdown](https://daringfireball.net/projects/markdown/syntax)
 
-TBA
+You should use reST to edit .rst file, and Pandoc Markdown to edit .md file. [Click here to learn the different between Markdown and reST](http://www.unexpected-vortices.com/doc-notes/markdown-and-rest-compared.html). 
 
 ## Tracking changes