Skim through your book and make a list of words you want to include in the index. These are words that readers might need in their search for specific information in the book. For example, if your book is about birdhouse-building techniques, the list might include words such as birds, wood, building, tools, paint and safety.
Search your book for each word you want include in the index when the final layout is finished and no page numbers will change. If you are working in a word processing program such as Microsoft Word, click on "Edit," "Find," then type in each word you want to add to your index, one at a time.
List the words in alphabetical order in the index. Next to each word, type the page numbers on which the word appeared.
Buy commercial indexing software such as TExtract to create your book's index. This program will automatically create an index, but you still have the ability to edit the index before exporting it to your book.