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please help me, to do this exercise :

This case study is meant to serve as a basis for developing your own backup, maintenance, and recovery scripts.

Assumptions:
1- The target database is running on windows 2000 platform.
2- The target database will be Oracle 9i, named DESTDB.
3- A user is created in the target database named BKuser with a password BKpass, and this user is granted SYSDBA privileges.
4- The database is running in NOARCHIVE mode.
This case study is divided into the following sections:
1- create an RMAN script for configuring RMAN parameters.
2- Backup the target database.
3- Validate the database:
a. Verify that database is restorable.
b. Verify that tablespaces are restorable.
4- Run Recovery catalog maintenance against the target database's control file.
5- Remove the target database to simulate and setup a disaster recovery situation.
6- Restore and recover the target database.

Q1:
Write the commands that will login to the target database, with no recovery catalog.

Q2:
Write the script that will set the default values for the following parameters:

Retention policy Redundancy 2
Device type Disk
Control file backup Automatic
Control file backup destination D:\Oracle9i\OraBackups\
Degree of parallelism 2


Q3:
Keep in mind that the only backups that are allowed are:
1- Whole database backups when the database is cleanly closed and the instance is mounted.
2- Tablespace backups of tablespaces that are offline clean or read only.
Write the script that will backup the whole database, after taking the two previous points in consideration.

Q4:
Write a script to verify that a the entire database can be restored using the existing backups, and check on the ability to restore an individual tablespace named redo_tbs.

Q5:
Write a script to do the following:
1- Display a list of files that need to be backed up based on the retention policy.
2- Delete any un-necessary backups.
3- Get a complete summary list of existing backups.

Q6:
We removed the target database to simulate and setup a disaster recovery situation, the instance is shutdown, and all the configuration files are in their appropriate places, write a script to restore and recover the target database.