i decided to make this little guide to give some ideas of how a beginner could use their hotkeys & groups with zerg.
first of all you should know that
ctrl+{Number} creates a control group with the selected units
SHIFT+{Number} adds selected units to an already existing group.
i suggest using GRID Hotkeys :-P
for me they are simply the best setup and imitate what you see on the screen (QWERT, ASDFG, and so on)
they are easiest to learn and most effective. some people use standard (which is the same like j for janissary or m for musketeer in aoe3) which is just plain hard to get used to imo.
So what you could use is following setup:
1,2,3 Units:
simple, you don't need more than 3 control groups for units actually. even if you have 3 different unit types in one group you can "TAB" between them and select their speciala bility or something or just double click on one unit type or ctrl+left click to select all of that respective unit type
4 All Hatcheries (TC's):
when a new hatchery is built, select it and press SHIFT+4 to add it to the current group of all hatcheries
5 All Queens:
again, same as all hatcheries.
6-8 Miscellaneous:
can be used for nydus worms or some scouts to drop units or anything else
Explanation:
the spawn larva ability of the queen is the eco ability of zerg.
whenever you spawn a larva on a hatchery, 40 seconds later 4 larvae will pop out on top of the standard 3 a hatchery produces itself giving you more units to queue, let it be workers or military units.
now the trick is on how you do it.
a bad way would be: having all queens in different control grops and manually doing it. costs alot of time and attention.
![Wink ;)](./images/smilies/wink.gif)
Now one the best way to do this is to press 5, to select all queens, then press "X" for spawn larva ("X" on the GRID hotkey setup) then hover your mouse to the minimap, and hold SHIFT and now left click on all hatcheries.
what will happen is that all your queens will cast spawn larva on all of your hatcheries. the closest queen to a hatchery will cast spawn larva saving you ALOT of time :-P
OR
Other technique: Backspace + Shift
1. Put all queens on 1 hotkey.
2. Select queens.
3. Press Spawn Larvae hotkey (x, v when you don't use grid)
4. Press Backspace once to center on a hatch.
5. Hold Right Side Shift. DO NOT RELEASE.
6. Spam left mouse click + Backspace
7. All hatches are injected.
Video example showing this:
another tip added by drew was if you have like 10 or so unused larvae, press 4 for your hatchery hotkey and then press Q (to open the build menu for larva) then press and hold down "E" for example for a big army of zerglings.
there is a rally point for drones (workers) and units, both can be set with "F" for drones and "G" for units
BIG REMINDER! what drew said is 100% true.
you really gotta take care of your queens not trying to walk across the whole map (this can be done by just looking at your muliple hatcheries(backspace button is the hotkey for looking at your hatches),
if nothing moves, you're fine which should be most of the time) ;-)