The key factor is preparation and there is no way to lay turf quickly or cheaply or you are honestly wasting time and money. Been there bought T shirt etc !! make sure ground is throughly cultivated with a rotavator. get rid of all stones and then rake and ensure as level as poss. Then have a layer of peat and / or fertiliser and rake again.(also make sure soil is well drained hence rotavator will help.). Rake again to mix soil and fertiliser and then roll with garden roller. If it looks "lumpy just rake over the high / low bits and repeat. When rolled, just lightly rake so that the turf will take hold of the base earth. Then lay and water every night for about two weeks. You should take about 3 days to prepare the ground well. Laying the turf takes only a fraction of the time but is well worth it. Don't forget to water well. If you don't and sun is strong, it will scorch and burn. You should have a cracking lawn in about a month. By the way mine's a guinness !!