Are you thinking of putting in a whole new yard? It can be quite an endeavor, but a rewarding one in the end. Of course the first step will be making sure you have a good foundation in the way of soil. It is good to know that you have many resources available to you through the UCCE Master Gardener public website to help you get off on the best footing. http://uccemg.com/
Here are a few articles you might consider:
The following will discuss how to test your soil, how to manage your soil, and adding soil amendments;
This link will give a few places to purchase soil amendments:
Please visit the many topics discussed and helpful information you will discover on the above mentioned website pertaining to your landscape needs.
Remember the old adage, always put a $1 plant in a $5 hole!