Your faucet should already come with installation instructions but if they didn't by accident or you lost your original copy, you can visit Delta's website and type in the model or serial number. The site just might have the installation instructions for you to print out or download.
You should already have the installation instructions. If not, please go to the website for them. However you will need probably about 35% more space than you have now.
Delta faucet comes with instructions, and if missed or lost, visit their site and put the model number of faucet and you'll be getting the instructions-dowloadable/printable version