Oh Yes it doesn't get much better than this - 18 hours of free training on MOSS 2007 all online so you can peruse it at your pleasure courtesy of 'english-tiger' training!
Before you learn from the online version of the deep three-day class (below), ensure you are up to speed by viewing the technical backgrounder on Enterprise Search Architecture.
Full three-day training class!
Module 1 - Introduction
This module introduces the full three-day class.
Module 2 - Enterprise Search Overview
This module provides some astounding figures as to why organizations require Enterprise Search Solutions! We recommend that you do not skip this module.
Module 3 - SharePoint Search Walkthrough
This module is more than an overview. It cuts through the marketing hype in an informed, intelligent manner! We recommend that you do not skip this module.
Module 4 - Search Architecture and Deployment
This module provides essential insights, discussions, and very deep technical information on architecture and server layouts.
Module 5 - Crawl and Query Processes
This module provides the 'under-the-hood' story about what happens at crawl and indexing time, and follows up with essential information about the query-time processes. This is how Search in SharePoint actually works, regardless of what you see in the user interfaces.
Module 6 - Relevance Ranking
If relevance ranking is perceived to be inaccurate by your users, they will simply stop using your solutions. This module explains in detail how you can tune the relevance ranking subsystem.
Module 7 - Customizing the End-User Experience
This module shows you ALL that can be achieved by customizing Search Center in Microsoft Office SharePoint Server 2007, without requiring additional development effort. It is the definitive guide to customizing Search Center.
Module 8 - Developing Search Solutions
Where Search Center cannot be customized sufficiently to suit your needs, you might need to develop your own solutions. This module shows you how! Developer topics include the KeywordQuery syntax, the FullTextSQLQuery syntax, the Search object model, the Search Web service, and the Search Administration object module.
Module 9 - Business Data Catalog Search
This module shows you how to set up BDC search from scratch. It also highlights some common pitfalls.
Module 10 - Extensibility and Integration for Search
This module provides more information about the crawl and indexing process by focusing on iFilters and Protocol Handlers. It also discusses full and incremental crawls, as well as providing guidance around 32-bit/64-bit architecture.
Module 11 - Search Administration
This module provides a comprehensive discussion of search administration.
Module 12 - Security for Search
This module covers a variety of topics from search accounts, through Information Rights Management, to crawling Forms-based authenticated sites.
Module 13 - Performance, Scalability, and Capacity Planning
This module provides invaluable discussions of indexer requirements, query server requirements, and other scalability approaches. Most importantly, it discusses how you can plan disk space requirements for indexing large corpuses.
Module 14 - Search Operations
This module concludes the class by discussing operations and management tasks for enterprise search solutions.