Someone has already said this but I think it needs to be stressed as the most important tool of all, downloading the top replays and seeing for yourself how they do it. Play against them and copy what they do, at least this works for me as I learn by example. It's quite amazing the time you can shave off "perfect" runs.
Downloading the top dedimania records aren't possible if you're talking about online maps (well you can donate to the dedimania server to dl them if you want but there's no free way that I'm aware of) but it's possible for some of them to go to mania exchange and download the top replay which is sometimes actually better than the online time depending on the map (although unfortunately the mania exchange server is down atm too

) so until that is back up you could always ask some top players themselves for a replay or 2 (depending what map style you normally play on even I may be able to contribute a lil, not that I'm a top player really but I've nolifed a few maps in my time

) or simply download some campaign track replays, it's amazing what you learn from watching young riolu here
