I won 1st Bage  in Trailhead challenge on 3/9/2015. I did not get any email of address confirmation.Please the concerned persons of Salesforce/TrailHead may answer my question

@Lauren Grau: I have earned Four Badges and In below link its mentioned that after completing one batch,you will get free t-shirt.

http://go.pardot.com/l/27572/2015-06-25/447clt

Hi there,
I hope you are all excited and getting ready for the upcoming Summer Of Hacks hackathon! At the hackathon time flies by really fast and you don’t want to spend time installing and configuring multiple software required to build apps. So to help you with that, we have created a list of software and tools that you can pre-install before the hackathon and focus on building the app.

Software And Tools:

1. New Salesforce Account (https://developer.salesforce.com/ (https://developer.salesforce.com/" target="_blank))
In general, it's better to use new Salesforce account rather than an old one for the Hackathon so you have all the current features.
Tip: Add Network Access to "0.0.0.0" to "1.255.255.255" (Settings > Network Access) so you can login from any I.P. address.

2. Github (https://github.com/ (https://github.com/" target="_blank))
Make sure you have Github installed and configured. You can find instructions for Github CLI here: https://help.github.com/articles/set-up-git, for Windows GUI client here: https://windows.github.com/, and for Mac GUI client here: https://mac.github.com/.

3. Force.com CLI (http://force-cli.heroku.com/)
Force.com CLI allows you to interact with Salesforce. Use this tool to download your app (see: http://bit.ly/U5NboC (http://bit.ly/U5NboC" target="_blank)) to local machine so that you can later check-in your app to Github.

4.  Salesforce1 Mobile App  (http://www.salesforce.com/mobile/)
Install and try Salesforce1 Mobile app from Apple or Google Play app store to ensure your phone is compatible.

5. Salesforce1 Chrome Browser Plugin:(http://bit.ly/1qH8tWw )
It opens up Salesforce1 inside Chrome browser. You can use this to see how your app looks inside a mobile device. Tip: You can also debug your app by simply going to https://<instance>.salesforce.com/one/one.app

6. SOQL Tools
There are many tools for you to make and test REST calls and SOQL queries to Salesforce and here are couple of them. 1. Workbench (https://workbench.developerforce.com/login.php (https://workbench.developerforce.com/login.php" target="_blank)) and 2. A Chrome browser plugin called Advanced REST Client ( http://bit.ly/K5yopu (http://bit.ly/K5yopu" target="_blank))

7. Heroku + Canvas App (https://www.heroku.com (https://www.heroku.com" target="_blank)):
If you are planning to build a Heroku + Canvas App, make sure to register to Heroku and setup your Heroku environment.

@rajaraodv (http://twitter.com/rajaraodv" target="_blank)