First,Login as admin and in the admin Home Page select System ->Configuration.
Under the Configuration tab on the left Side Select Shipping Settings.Here you can Find two options Origin and Options.From that you Can Change Settings Such as Country,Regional,etc.
Now Select Shipping Methods next to Shipping Settings.Under that you can find Flat rate,Table rate,Free Shipping,UPS etc.Let us see One by One.
1) Flat rate:
Fill the necessary field in the Flat rate as specified above.
Here in the table rate select Enabled as Yes for displaying table rate in front end.Fill the remaining field as Specified above and Select Yes for the option Show method if not applicable which is not shown in the above Figure.Then in Export option.Click on Export CSV.This will export a empty tablerate.csv file.open a file with Spread Sheet and Edit Your Data.Here is the Sample Spread Sheet.
Here I enter the data for the different field such as Country,Region,Zip/Postal,Weight,Shipping Price.In Region and Zip/Postal Filed,I enter as * which denotes all regions and all Postal Codes.Here Weight and Shipping Price denotes that if the weight of the Product is between $0 and $49.99 then the shipping Charge would be $15.If it is between $50 and $99.99 then the shipping charge would be $10 and so on.
Fill the required field in Free Shipping Tab as Specified above.Here You Can set Minimum Order amount.So that the Product Which exceeds this Minimum order amount will have Free Shipping.
Then For the remaining Option You can choose Courier Service as your wish and Fill the Specified Fields.After that click on Save Configuration to save your configurations.
Then Come to Front End and Reload the Page.Add any Product into Your Cart and Proceed Check Out.In the CheckOut Page you have enter your details and in the Shipping Information You can see the Flat Rate,Table rate, Shipping Value For the Product.Here You can see the Shipping rate as $0 because we have added the Product in the cart which exceeds $100.