I finally managed to do this task (so I'm not able to place the solution here). But I could do it only by searching the help topics, and I didn't really understand neither the conditions, nor the solution. And in the topics I didn't find any explanation of the conditions, only partial answers to the solution. 1. So, what does "Add 10 strings to it from the keyboard, but only add them to the beginning of the list, not the end." mean? Does that mean that the list must be inverted? Why? For me, that's not clear (maybe it's problem with the English language, who knows). 2. In the code bellow, what is the purpose of the "list.add(0, s);"? Am I adding an element at the beginning of the array? Why? 
for(int i = 0; i < 10; i++) {
    String s = reader.readLine();
    list.add(0, s);
}
3. In the code bellow, why does the output come inverted?? For me, that makes no sense xD 
for(int i = 0; i < list.size(); i++){
    System.out.println(list.get(i));
}
Input: grandfather grandmother father mother son daughter cat dog program car Output: car program dog cat daughter son mother father grandmother grandfather -- Hope someone can help me on this task, which was supposed to be "easy". Thanks! :D