Install the Artificial Lawn
There are a few steps involved before laying your artificial turf. Some of these are optional, but it's always best to check with your artificial lawn manufacturer. It's not difficult to pull up the lawn and try again if you mess something up, but it's always best to do the job right the first time.
If weeds are a concern you can lay a weed control landscape fabric, which will prevent weeds from growing up and through your lawn creating bumps and discoloring the lawn. If you are having problems with getting the ground level, you can put down a layer of sand or crushed stone, just make sure you use a roller or tamper to smooth out the surface.
Once you've got a level surface, you can install an underlayment which will provide a permeable cushioning for your artificial lawn. Some lawns don't require this, as the grass is already attached to a solid and soft base.
Your artificial lawn will be packaged as a roll, similar to how new sod is sometimes transported. At the time of purchase you'll buy exactly the amount you need based on the size of your lawn, and then you just unroll it and position it in place.
To cover large areas, you'll install the lawn in multiple strips. Make sure the orientation of the grass is facing the same direction and place the lawn strips directly next to each other. After the strips are nailed down and the lawn is brushed a bit, you should no longer notice any difference between separate pieces.