Getting Multiple records from one Table to another after Insert

[Rajiv Terwadkar]

Dear All,
I am brand new to Triggers and Stored procedures!
Here are the details
I have 3 tables MAIN_TABLE, TABLE_1 and TABLE_2
now I want to run a trigger after insert in MAIN_TABLE.
This trigger should get one of the value of a column say MAIN_TABLE.Column_1 from MAIN_TABLE and based on that value it should pick up all the values (Select * statement) from TABLE_1 using where clause TABLE_1.Column_X = MAIN_TABLE.Column_1
and insert all the values into TABLE_2

I will appreciate if you can help me on this,
Thanks and Regards
Rajiv