Simply download the contracts and fill in all the highlighted portions. I use Adobe Sign to add signature fields and send contracts to be e-signed. You print the word doc to a pdf and load that pdf into a new contract in Adobe Sign and at the bottom you add a sigature field for the client and a name field and title field. When the client Opens the email they will be directed to sign and add their name and title where you specified. Boom, contract signed and it's saved in your account.
DISCLAIMER: This contract was written by my business contract lawyer, by downloading my contracts you are waving the right to hold me or my lawyer liable for anything you do with it and that might come from it. You are free to use these contracts and modify them to fit your businesses.
One contract has slightly different wording for monthly subsciption clients, and the ohter is for clients who pay you a lump sum with no monthly committment. But you can add hosting fees and domain registration fees or anything else you need in the contract. Make sure you put all your fees and everything in your contract supplemental to what I have provided.
Make sure you replace the highlighted text with yours and your clients info and pricing.