In this starcraft 2 guide I’m going to give you a few tips about how to use hotkeys effectively.
1) Always hotkey your Orbital Command so you can instantly access the structure for a quick scanner sweep when cloaked units attack your forces out in the field. Always set the same hotkeys for specific training facilities, such as Barracks or Factory or Starport.
2) It is particularly important to hotkey any units you send out as scouts. Scouts are usually weak, expendable units who die fast when they stumble into the lethal trouble they are looking for. You want to get a glimpse of what the scout has discovered before the poor guy gets obliterated.
3) Always assign the same hotkey to your special ability units such as Wraiths or Siege Tanks so you can quickly select and activate their special ability (e.g., cloak Wraiths or toggle tanks between siege and mobile modes). Always assign the same hotkey to specific unit groupings. For example, always hotkey your primary ground assault force (usually a balanced mix of units) to the same key every game or mission.
4) Do the same with any other sort of group you like to form regularly: your primary flying squadron, your mobile base defense force, your reconnaissance team, and so forth.