Druid can load data from static files through a variety of methods described here.
Druid has built-in batch ingestion functionality. See here for more info.
Hadoop can be used for batch ingestion. The Hadoop-based batch ingestion will be faster and more scalable than the native batch ingestion. See here for more details.
Getting data into Druid can definitely be difficult for first time users. Please don't hesitate to ask questions in our IRC channel or on our google groups page.