Below is a list of free pay-per-click  tools, contact info, and other informational aids made available by the major search engines. These are meant to help augment your WordStream PPC  campaigns.
In addition to these tools and informational resources, please check out our own WordStream Learning Center  for a series of informational aids:
- Informative Tutorials 
- Search Marketing White Papers 
- A Comprehensive Search Engine Marketing Glossary 
- WordStream Video Demo (our PPC Tutorial )
- And More...
PPC News & Contact Information:
To navigate to each of the three major search marketing advertising platforms, you can visit the following domains:
Google AdWords - https://adwords.google.com/ 
Yahoo! Search Marketing - http://searchmarketing.yahoo.com 
Microsoft AdCenter - https://adcenter.microsoft.com/ 
For more information about each of these platforms:
Google AdWords Information:
Google AdWords Blog:
This is a link to the official Google AdWords  Weblog, where you'll find news and information about AdWords from their staff.
Online Support Center:
Call AdWords Support via phone at: 1-866-2-Google
Yahoo! Search Marketing Information:
Yahoo! Search Marketing Blog:
This is a link to the official Yahoo! Search Marketing  Weblog, where you'll find news and information about Yahoo! Search Marketing from their staff.
Yahoo! Search Marketing On-line Help Center:
Call Yahoo! Support via phone at: (866) 310-6837
Microsoft AdCenter Information:
Microsoft AdCenter Blog:
This is the official Microsoft AdCenter  blog, where you'll find news and information about the Microsoft advertising platform from their staff.
Microsoft AdCenter Support
Call Microsoft AdCenter Support at: (800) 518-5689
Additional PPC Information:
This page houses an extensive list of Google AdWords explanations and tutorials.
Google AdWords Match Types:
This page describes the different keyword matching options  available to Google AdWords advertisers.
Yahoo! Match Types:
This page describes the different matching types available through Yahoo! Search Marketing.
Google AdWords Quality Score Synopsis:
This page describes what Google describes as “Quality Score” and the factors they consider in calculating an account's Quality Score.
Google AdWords and Yahoo! Search Marketing Login & Sign Up Information
Google AdWords Login/Sign Up:
This is the login and sign up page for Google AdWords (if you don't already have one, you'll need to create a Google AdWords account before you can start utilizing WordStream for your pay-per-click marketing campaigns).
Yahoo! Search Marketing Login/Sign Up:
This is the login and sign up page for Yahoo! Search Marketing (if you don't already have one, you'll need to create a Yahoo! Search Marketing account before you can start utilizing WordStream for your pay-per-click marketing campaigns).
Google AdWords My Client Center:
In order to obtain a Google API key, you'll need to create a Google AdWords My Client Center account. This page will walk you through the process.
Google AdWords API Key:
In order to allow WordStream to interface with your Google AdWords account, you need to acquire a developer's API key. This page is the Google AdWords API sign up screen.
Yahoo! Search Marketing API Key
In order to allow WordStream to interface with your Yahoo! Search Marketing account, you need to acquire a developer's API key. This page is the Yahoo! Search Marketing API sign up screen.
Free PPC Tools
Google AdWords Conversion Optimizer Description:
This page provides a description of the Google AdWords Conversion Optimizer (what it does, how it works, etc).
Google Keyword Suggestion Tool:
This is a link to the free keyword tool  - the Google Keyword Tool ; this PPC tool  can give you an initial list of keywords to jump start your WordStream account if you can't get a hold of your logs or if you're launching a new site.
Google Traffic Estimator:
This is a link to Google's Traffic Estimator tool, which will give you an estimate of costs per click, clicks per day, and cost per day for any given keyword.
Local Ad Preview Tool:
This is a link to a free tool which enables you to make sure that your geo-targeted online local advertising  ads are in fact being displayed in the city or region you targeted the ad to.
Google Website Optimizer:
This is a link to a free tool which allows you to run multivariate tests on multiple pay-per-click landing pages.