Massive docs update

docs/flashing.md

@@ -5,22 +5,39 @@ as appropriate (see [Adafruit's
 documentation](https://learn.adafruit.com/welcome-to-circuitpython/installing-circuitpython),
 though it doesn't cover all CircuitPython boards - you may need to glance around
 the CircuitPython source or ask on Discord). We primarily target CircuitPython
-4.0-alpha1 and above, though many features should work on 3.x. You'll only need
+4.0-alpha1 to 4.0-alpha3. You'll only need
 to flash CircuitPython once (unless we update our baseline supported version).
 
 After CircuitPython has been flashed, a `CIRCUITPY` drive should show up on your
-computer (some Linux/BSD users without drive automounting will want to poke
-around `dmesg` to find the drive identifier and mount this drive manually
-somewhere - ex. `mkdir -p ~/mnt && sudo mount -o uid=1000,gid=1000 /dev/sdf1
-~/mnt`, where `uid` and `gid` are your user ID and primary group ID, as found in
-`id -u` and `id -g`). Take note of the path that this is mounted to (for MacOS
-users, this will probably look something like `/Volumes/CIRCUITPY`).
+computer most likely.  If not, check out the troubleshooting section below.
 
-To "flash" all of KMK, your keymap, and a basic `main.py` that will start
-everything up, run `make MOUNTPOINT=/path/to/wherever
-USER_KEYMAP=path/to/keymap.py`. For example, if my `CIRCUITPY` volume is mounted
-to `~/mnt`, I might flash my development breadboard with the following:
+# Windows
+Currently, we do not have an official "flasher" for windows. You can manually install it fairly easily and we recommend coming to the KMK discord/Matrix server if you have any questions. An actual tool is in development. Alternatively, you can flash from any linux like tool set (Cygwin, WSL, ect) using the Linux guide below.
+
+# Mac
+Until an interactive installer is created, please follow the linux instructions replacing /mnt with /Volumes
+
+# Linux
+
+While in the directory for kmk, simply run this, changing the mount point and keymap name to whatever is appropriate.
 
 ```sh
-make MOUNTPOINT=~/mnt USER_KEYMAP=user_keymaps/klardotsh/itsybitsy_m4_express/threethree.py
+make MOUNTPOINT=/mnt/CIRCUITPY USER_KEYMAP=user_keymaps/nameofyourkeymap.py
 ```
+
+# Troubleshooting
+## Windows
+Please join us on the Discord/Matrix server and we can help you out
+
+## Mac
+Please join us on the Discord/Matrix server and we can help you out
+    
+## Linux/BSD
+Check to see if your drive may have mounted elsewhere with a gui tool. Most will give you the directory in the GUI.
+If it's not mounted, you can read up on how to mount a drive manually here. https://wiki.archlinux.org/index.php/File_systems#Mount_a_file_system
+
+It would look something like this
+
+`sudo mount -o uid=1000,gid=1000 /dev/sdf1 ~/mnt`
+
+If you still are having issues, come say hi in the Discord/Matrix servers and we'll help you out.