How to start with F5 BIG-IP ASM quickly?

Thanks for the time. For your kind information I have studied five times the John chapters 1 -10 and its manual with LTM and other configuration also. I am in a production environment that's why asking the questions. I am only stuck in the events appear as logs. But your answers confuse me. Blocked request and Illegal request are two different status. In the above you mentioned that If signature is in staging state it will not block any request so it will not come in event logs. But Illegal request and truncated request messages can be seen even signature are in staging state.

I am very much clear that Policy in Blocking state and Signature staging must be disabled to block the requests implemented in the policy.