Firstly you open up the normal Google page and you will see along the top a row of tabs such as Images, Maps etc. at the right hand end is the tab “more”. Click on that and you get a drop down box with a list of other options which includes “Books”. Click on that.
If you click on the “Browse Books” tab it will open up a page which has an advanced search link. Click on that and you get a search page will a number of options. Once you have filled in the details of what you are searching for you can opt to just have Full View Only books displayed, this is what I usually do.
There are thousands of books there which are of interest and help to family historians. So give it a go and see just what is awaiting you in the Google Library and don’t forget that Google are in the process of scanning thousands of books & pamphlets that are held in the British Library.
Oh dear so much to search and only one lifetime !!