Craig's Elements of Soil Mechanics was the one I started with, and have heard good things from many people about it. Decoding Eurocode 7 is also an excellent read especially if you design to the Eurocodes.
It's very encouraging to see you willing to pick up a book to read prior to employment. Read as much as you can about as much as you can in your field, even if you don't see yourself using it just yet - it will pay dividends. Best of luck!