I recommend you start here:
http://na.op.gg/champion/kled/statistics/top
Look at the most commonly picked up items. Look at the masterys and runes. Then go check out the pages for some of the "Kled Masters". Look at their full itemization. Take this Challenger-level fellow, for example:
http://na.op.gg/summoner/userName=18yroldsteel
His most recently played game was Kled!
So there's your blueprint. There's no need to try to re-invent the wheel; It's already invented and is well on the way to being perfected. If it's good enough for a Challenger player, it's good enough for us.
You can even watch the replay for his most recent game by clicking on the camera icon next to the match info. So you can see how to play it in at least the one matchup type and how to approach midgame/team fighting.
And this is my advice in general: If you want to know how to approach a new champ, don't wander or wonder. The data is already out there and available. Just go someplace like op.gg, parse the wealth of knowledge already accumulated, and start off on the path to success. Don't wander; there's no reason to be lost in the internet age.