Keyword Research Tool
7Search Keyword Suggestion
Tool from 7Search company. You can use it to get keywords and estimated prices in the 7Search network.
Keyword Suggestion Tool
Free Keyword Suggestion Tool from Wordtracker
Generate up to 100 related keywords and an estimate of their daily search volume.
Keyword Finder
Wordpot Keyword Finder
They collect data from a combination of the real time searches done on popular meta search engines (like Metacrawler and Dogpile) and results published by Google (zeitgeist), Yahoo and Msn.
Typing Error Generator
Typo Generator
Some important keywords are frequently spelled incorrectly. The typing error generator will provide you with a range of misspellings for your specified keywords.
Bid Management Tool
Google Conversion Optimizer
Increase your AdWords conversions and decrease cost per acquisition. On average, campaigns adopting the Conversion Optimiser achieve a 21% increase in conversions while decreasing their CPA by 14%
Bid Management Tool
BidMax
PPC BidMax (formerly Dynamic Bid Maximizer) is the ultimate in automated Pay Per Click bid management software. This is an essential PPC bid management tool to help you manage online advertising campaigns for Google Adwords, Yahoo! Search Marketing and MSN Adcenter under one simple interface.
Competitive Research Tools
KeyCompete
KeyCompete is an online keyword research tool that identifies the keywords your competitors are using in their pay-per-click campaigns.
PPC Search Engine Advertising Basics.
Basic knowlege about PPC. Keywords and Ad structure, bidding strategy and targeting.