There are a number of ways to adjust your bids and budgets.
In the Manage Account section, you can update default campaign bids by entering new values in the Campaign Grid.
In the Manage Campaign and Manage Ad Groups sections, you can update default bids by entering new values in the Tools area. In the Manage Ad Groups section, you can also set individual keyword bids in the Keyword Grid at the bottom of the section.
Finally, you can update individual keyword bids in bulk in the Keyword Bulk Edit and Bulk Upload tools. For more information on these tools, see the Bulk Management section of the Product Guide.
You can change your daily budget by clicking on your current daily budget in the Tools area of the Manage Campaign section, entering a new value and moving the cursor away. You can also edit it in the Campaign Grid of the Manage Account section.