Forward: Set your bid strategy
Set your daily budget
The daily budget is the amount you set for each campaign in order to indicate how much, on average, is willing to spend per day. If this is the first time you use AdWords, we recommend that you start slowly and let the campaign run for a few weeks before re-evaluate your budget.
If you are used to working with a monthly advertising budget, you can calculate the average amount that can be quoted daily by dividing your monthly budget by 30.4 (the average number of days per month).
In general, the AdWords system will try to show your ads as often as possible until the daily budget is exhausted. Because customer traffic varies from day to day, AdWords can allow up to 20% more clicks in one day than specified in your budget. However, our system makes sure that in a given billing period will not be charged more than 30.4 multiplied by the amount of average daily budget.