Where do I start in order to create a summary report for a questionnaire?

Question

I am creating a summary report for an internal questionnaire took by branches of a company.
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
The two tables in use are:
SQL> describe answers;
Name Null? Type
ID NOT NULL NUMBER(38)
QUESTION_ID NOT NULL NUMBER(38)
LABEL NOT NULL VARCHAR2(150)
The 'answers' table contains the answers for each question.
SQL> describe user_answer;
Name Null? Type
ID NOT NULL NUMBER(38)
USER_ID NOT NULL NUMBER(38)
ANSWER_ID NUMBER(38)
ANSWERED_QUESTION_ID NUMBER(38)
DATE_ANSWERED DATE
The 'user_answer' table contains the selected answer(s), from the 'answers' table, by the user.
There are 150 questions total in the questionnaire made up of either single or mulitple choice questions. As a sample, the first three questions look similar to:
Q.1 Do you use BIS or BES? Yes[] No[]
Q.2 What is your favorite phone shell colors? Green{} Red{} Black{} Silver{}
Q.3 Do you plan to purchase a new phone today? Yes{} No{} Unknown{}
I need to find the total for each possible answer for all the users. For example, I have four individuals who take the questionnaire.
Alpha answers the first three questions as:
Q.1 - Yes
Q.2 - Green, Red
Q.3 - Unknown
Bravo answers the first three questions as:
Q.1 - Yes
Q.2 - Green, Red, Black
Q.3 - Yes
Charlie answers the first three questions as:
Q.1 - No
Q.2 - Green, Black
Q.3 - No
Delta answers the first three questions as:
Q.1 - No
Q.2 - Green, Red
Q.3 - No
Using the two tables above, I need to produce the following summary.
Q.1 Yes - 2, No - 2
Q.2 Green - 4, Red - 3, Black - 2, Silver - 0
Q.3 Yes - 1, No - 2, Unknown - 1
Reading through chapter 9 SQL Queries and Subqueries at http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/queries.htm#i2068094, I'm not for sure if this is the right place to start? I'm testing with the GROUP BY and ORDER BY statements with not a lot of luck here either.
Any suggestions on how to get started or possible examples would be greatly appreciated.
Thank you.

Answer 1

Thank you.
I will be sure to include the CREATE TABLE and INSERT statements in the future.
Your example is appreciated and I've came up with the following solution for the report:
WITH summary_results
          AS ( SELECT     answered_question_id, answer_id, COUNT ( * ) AS cnt
                         FROM     user_answer
                    WHERE          user_id = 43798
                                   OR user_id = 2371
                                   OR user_id = 1731
                                   OR user_id = 19935
               GROUP BY     answered_question_id, answer_id
               ORDER BY     answered_question_id, cnt DESC)
SELECT     sr.answered_question_id, sr.answer_id, sr.cnt, a.label
FROM     summary_results sr, answers a
WHERE     sr.answer_id = a.id;