You have already configured Hortonworks Sandbox environment. You are running Sandbox in the browser. Why not just try doing some practical example , loading some data, running some query on the data to get some results before actually going into Hadoop architecture in detail.
In this chapter you will come across few new terms like HDFS, HCatalog etc. We will explain all of them in details in next chapter. In this chapter our goal is to run a simple example without going into much technical details.
Here is the sequence of steps to achieve this.
In the next chapter we will explain the details of each steps.