YOU can use Control and click all the ones you want...and PULL ALL you want onto your page, just hit ENTER for each one and they will be all in same place, but all there for you to arrange.
Be still my heart for separated alphas!
Yup, this. This is why separated are a million times easier than sheets. You can also use scripts on separated alphas, and you can't on sheets. Anna Forrest has some where you just type in the title you want and the script grabs all the letters and aligns them for you. Flat impossible with a sheet alpha.
Not a full tut, but a rundown of how I do it:
This is one of the scripts I use. It's free. It will split contiguous pixels onto separate layers. You can specify a range of pixels as 'padding' and preview it before it splits. You can usually use this to, for example, get the dots on the i and j into the proper layers while still getting each letter separated. Occasionally you'll have to merge, say, a colon, where the two dots aren't particularly close to each other, but 99% of the time, the script does exactly what I need.
After that, I rearrange the layers to be in alphabetical order if they aren't already, and run an action I made myself that renames each layer "A", "B", "C", etc. If there are several colors/versions of the same alpha in a kit, I'll record the rearranging part as an action so I can run it on all the versions. The only layers you have to manually name are symbols.
Photoshop comes with a script that exports layers into files. It adds numbers to the layers,
so I found a fix for that via Google or you could use a batch rename tool to remove the numbers. With this script, you can make it add the designer_kit_ prefix to the letters.
It looks like a lot of words when I type it out, but it's quite quick.