We strongly recommend any AdWords advertiser to manage their campaigns with AdWords Editor.

Main AdWords Editor Features: 

• Work offline on your Mac or PC.
• Upload changes to AdWords any time.
• Store and navigate one or more accounts.
• Add, edit, and delete campaigns, ad groups, ads, keywords, and placements.
• Make large-scale changes quickly.
• Perform advanced searches and edits.
• Add comments for your changes.
• Sort and view performance statistics.
• Copy or move items between campaigns, ad groups, and accounts.
• Export a snapshot of your account for archiving or sharing.
• Import an archive or share file and review the proposed changes.

Download AdWords Editor now!

Need to check your ad ranking? Is your new ad text online? Don't use the classic Google search page, but Google AdPreview.

https://adwords.google.com/select/AdTargetingPreviewTool

This way you can test your keywords as many times as you want, without impacting all advertisers statistics.