Deploying a solution from scratch is not part of these steps. This can be documented at a later date.
To use an existing solution as a starting point for your new deployment, read on:
Create a new DB in SSMS with a name that references the customer. (E.g. LGX_CLIENTCODE01)
Restore the backup you have taken from another site. You can Google for steps on how to restore a backup in SSMS
Alternatively you can use scripts which follow to create empty solutions.