Tips you should know before you head on into your first/next game:

This build is different from most Kayle builds because it is more early-game focussed. Anyone who has tried the basic full-scale Kayle builds probably noticed that is is quite hard to carry if your team is losing lanes. With this build you spike earlier and therefore have a MUCH easier time carrying. Perfect for lower elo and less-experienced players.

You pretty much do not have lane presence till level 6. Try to farm but do not fight! (Ganks excluded)

It is completely FINE to miss CS if you can not get to the minions without sacrificing too much health. Make the minions that are close to you count and don't be scared to farm under tower. It can be learned easily.

After 6 try to SAFELY poke while always lasthitting the minions. CS has priority!

Getting a gank is the best thing that can happen to you early. Use your Q for the slow and play it safe. If you can get the enemy to back you have free farm. If you get a kill - even better.

Take jungle camps whenever you can. Getting to lvl 16 is a big priority. After 16 keep farming for full build but don't overdo it. You want to NICELY make your team understand that it is important for you to get as much xp/gold as possible. They often will not be amused seeing you take "their" farm. Pinging your lvl or the camps often helps.

Around lvl 11 you often realize that you got quite strong and deal a good amount of damage. Feel free to start playing aggressive (beware of jungler) or just go all-in if the enemy is poked down and you hit a Q.

Some more quick basic Information:

Your Q slows and decreases resistances. It also has a fixed distance after the first hit. Try hitting a minion from max-range with it and you will see what I mean. This makes poking with your Q a LOT easier - so keep it in mind.

Your W heals and increases the speed of yourself AND a teammate.

Your E does more dmg the lower the target's health is. Use it as the last attack to kill the enemy (execute) or shortly before he leaves your range during trades. It also RESETS your auto-attack and gets and AOE-effect at lvl 11.

Your R can be used on yourself and on teammates. It is better to use it a bit earlier in the fight instead of waiting to use it as a last-second saving tool.

Use your E and Q to farm from range before lvl 6 but always leave some mana saved up.

And last but not least, look at my Notes if you need extra information.