Can anyone give me some tips on keeping the lawn neat and smooth? Moderator's note: removed website link, see point 1.1 of usage rules
yes, i can. and it would be only one, prepare a schedule of you for giving time to your lawn and strictly follow it.
It could depend on the type of grass you have and what you're soil is like. When a friend of mine moved, her backyard was pretty much sand and clay, so she had a lot of work to do to get a beautiful yard.
Cut it a little bit longer, rather than cutting it short. Make sure you have a good cultivar of lawn for the area it is in (shade-tolerant, etc) in the first place.