There is a search box on the homepage, the page you see after you login.
Enter your search term(s) in the search box and click the Search button.
Your search term can be, well, anything
As you start typing you may see, just like Google, suggested searches appear below the search box. These may give you some ideas for different search terms.
Also below the search box, is a link 'Search Options'. Click on this to reveal a large number of options you can use to fine tune your search
These options are:
The advanced search function is very powerful. You can use it to create structured queries, where you apply limiters before searching instead of after
You can choose a specific field in which to search. Though some fields are perhaps more useful than others. You are perhaps unlikely to use an ISBN as a search term.
You can search in multiple fields using the Boolean Operators AND, OR and NOT to combine search terms. For example, you could search for Kelly (Author) AND Toxic Chemicals (Title). Field searching and Boolean Operators are a very powerful combination but might be tricky to get right.
Advanced searching shows the hidden basic search options (the section Search Options, above as standard), but includes two other options:
On the home page you can search, or you can browse categories. Below the search box, there is a row of highlighted ebooks. You can scroll lo the left and to the right by clicking on the arrows 
that appear to the left and right of the books
Not visible in the image above is a row of books below Highlights, Featured eBooks, which shows books in a random category. The highlights and the featured category are changed every time you access the page
On the left of the page is a column, search by category. Click on a category show all books in that particular category.
