Posted: 07/09/2014 at 14:04
Clueless, don't start a lawn now, wait till spring, bit late now. Do as Fairygirl has suggested, raised beds first, they'll take time on their own and you have the opportunity to see how they do over winter and next spring.
In spring, I'd use glyphosate to kill off the whole lawn area, treat twice as it'll take a few weeks to all die back
As .fairygirl has said, using machines to turn the soil can cause more problems than it's worth, digging is the better bet even though it's hard work the results will be better.
There is plenty of guidance on sowing or turfing a lawn in the HOW TO section on the site. It's simple and easy to follow and leaving it till spring will give you time to consider what else you want to do in the garden as well.