How to exactly micro a protoss army like a pro?

1. if you are in battle and have all of each hot key groups setup like what is being described, you will insta fail by overkill on one unit/making your unit AI not work properly on units already being in position. <--- do not use your hot keys like this. doesnt help micro at all
-by holding ctrl + clicking a unit (for me) will select all similar units in vision.
position your army in <3 seconds(haha its a heart i know i did it on purpose) and make them attack in order by using this and spreading them(boxing a group of 4 out of a group of 8 moving)
-im using hot keys as 1NForgeTemplarTwilightCyber/2GatewayRoboStarport(wg has universal hot key q) so easy to tab buildings want to check probes, chrono boost "1", want to check upgrades of all your possible upgrades "1-tab"
- 8 hot keys available = i put all of my sentries with all of my zealots(i never micro them) into 4 for the quickest forcef,gs, 1/2HTs into 5, other half in 6 just to be safe about movement,
7 - harass groups / phoenix warp prism harass
8 - control group of defensive army (2zealot/4stalkers/colossus/void mix) to deal with drops and not move your entire army out of position)
all situational and preferential and can all change at any time.

2. Focus Fire a certain enemy unit while engaged by shift-click the amount of units to send over more after if you need it. if you are setting up your army correctly you should not have a hard time reinforcing as P and will most likely have 1-2 warp prisms for harass/ warping in on the lines not going back to your base, as this makes your micro go away for as much time as it takes to WG the X amount of GW you have.

3. colossus micro is extremely easy and if done right it takes a long time for 6 colossus to go down.
-look at his aa and move the first engaged colossus immediately past the direction of stalkers should be in an arch of some sort and past it then one by one your colossus is moving and 5 are attacking while auto attack of stalkers hits their backup they can either switch targets and loose all those units/ the fight or reposition them himself, look for spots in his position can be compromised by ex cliffs, map chokes i never really focus fire with them unless its a building i really want
-when moving your colossus in battle, choose position so that it would immediately be able to fire upon arrival.

3. force field is used F then shift not the other way around, thats mega fail, and should b placed into a cup filled with th middle of his units, blocking the path of the other third of his units, and creating a choke for the 3rd set of his units. if you are falling back place them in a straight line
guardian shield takes about 2-3 to cover your entire armyu can use your extra hot keys to create a second group of 3 sentries that are your guardian sentries so you know they are in position/ initiate the hold position command then move if you are winning

4. stalker blink. im sure there is a full thread on it somewhere in here. the only mega fail i see is when people just blink their entire stalkers all in one shot it pisses me off. if you want to know more go watch some livestream or youtubes

5. storm - cover the ground with 160 aoe electricity / +1archon takes literally 2 seconds to do and i think 11 seconds INgame for archon. not sure if the unit ai auto joins the two lowest powered hts or in the order you have selected. if you know an engagement is coming have two up front for immediate storms on his army / feedback to ghosts(insta kill) and then morph archon for the two and you get him as the army is blocked by electricity. lay them down in blankets. not in a huge C or a straight line thats easy to get but if you fill the area behind him first he will either have engage into you where you would forcefield him, or go back through the entire storm also works if you know were he is storm as far in as you can to him if you know you are going to see him be ready.

6. Phoenix - have them all together in a group. they auto fire as they fly making them so amazing. in the min lines get them together before you go in then its moving into the mineral line and spamming grav beam on the gas gatherers/mules. spam the right button click to keep them tight in a ball so that you can see scvs to grav. usually goes grav then click grav then click etc
in large engagements decide what you want to use them for, as a damage dealer to soak up before your colossus in which attack at their airunits and drag them away from colossus. if you are using them for grav beam, lift anything of value, tanks, infestors, banelings(if u explode banelings with gravbeam it does splash damage to all units still.) you can send them in one at a time to pick up important units as the other dies by keeping yours on hold so that the group of them only moves 1 at a time to lift thinigs, but you could just have them massed and lift and killing marines which is sweet if their are zealots on the ground not being shot
against mutas engage them until they stop attacking then use your speed and range to chase him if he stops back off and reengage again.

7. Should you pull your army back? if you are thinking about it, youre prolly too late and will lose all units in the case of a massive fall back. keep an eye on your zealots and i try to engage in 4-7 second intervals depending on the outcomes of said intervals. ie: dont just suicide all of your zealots on the first engagement, move your stalkers forward to engage him prematurely into a storm then do it again and stay for a second, using blink micro to fall back troops 1 at a time to where your army resides and is in defensive positioning(spread zealots)forward colossus .then hes chasing into you to catch the damaged stalkers and he meets a wall of zealots that welcome an approaching enemy vs a fleeing one. if you do this damage, your shields will recharge for free. his units need be replenished and you've succeeded in your attack.