Fiora is great at damage within the first few seconds of a fight. The reason behind the boots is you want to hunt people down. The easiest targets for you, are people below half health, because you are faster and you have Lunge which you can activate twice. The rotation should be Riposte, even if you don't get hit, it permanently ups your attack power, then right as your about to strike (usually I hide in a bush) I activate Burst of Speed, Then lunge, lunge again and if you have your ult available use it. At this point the champ should be either dead or hurting, if they continue on just keep activating your Riposte, and Burst of Speed as they become available, If they run, hunt them down, activate your Burst of speed and use enemy minions between you and the champ to gain movement speed, and lunge when you can. For the first 5 levels, just play very defensively, once you get your ULT, go for it :).