The document provides an overview of bidding and conversions tools in Google AdWords, including a bid simulator, conversion tracking, and conversion optimizer. The bid simulator allows advertisers to estimate how clicks, costs, and impressions would change with different maximum cost-per-click bids. Conversion tracking enables advertisers to measure the ROI of campaigns by correlating ad clicks to sales and other conversions. The conversion optimizer is a free tool that uses conversion data to automatically optimize cost-per-acquisition bids to maximize conversions and reduce costs.