[Galaxy Note II Q&A, Help & Troubleshooting] Bolumstar:
THE MYTH

YOU HAVE TO WIPE EVERYTHING Including your internal sdcard.

You don't have to wipe your internal sdcard to install Marshmallow CM13

For me, Marshmallow is everything that lollipop should be!

Great credits to XDA, CM and all the developers here who tirelessly

Worked to make lollipop better, in my opinion, I think that

Google gathered most of these fixes and implemented it into

the Marshmallow.

FLASHING MARSHMALLOW CM13

There's a lot of things that could look confusing about

Flashing CM13 but it's not as complicated as many had

Made it look.

THE DO'S AND DON'T

Don't leave your external in the the phone while running CM13 you

Won't like the outcome

Don't attempt dirty flash of CM13 On CM12.1

Don't format only system partition before flashing CM13

HOW TO FLASH CM13

I used Philz touch but TWRP recovery can Still do it. put the CM13 zip in the internal memory

If you're using philz recovery use clean to install new Rom. if you're using TWRP format /system, /data, /cache, /preload

Flash CM13 Zip

Here comes the gapps issues time: make sure that you have any other keyboard apk in your internal phone memory

If you reboot the system now everything will work well without gapps.

there are two different outcomes: if you flash CM13, (don't wipe cache or dalvik) flash gapps (i used open gapps full and slim zero mini) and reboot system

this means you won't be stuck setup wizard but In some cases you may still have AOSP keyboard unfortunately has stopped, disable it and install the keyboard apk you have in your phone memory

If you flash CM13 reboot the system before flashing gapps, you will face setup wizard issue and possibly Aosp keyboard issue whenever you flash gapps.

NEW DEVELOPMENT

Credits to [MENTION=4365701]psndna88[/MENTION] the latest Angi kernel pureCM 4.4.9 (with SELinux permissive)

Makes it possible to use external sdcard and otg in CM13 but don't get so excited!

With Angi kernel 4.4.9 pureCM your external sdcard can be in your phone with

CM13 running perfectly but you can't use your sdcard files as normally as you do before. No app can see the sdcard (gallery and music player inclusive) the only way

You can access sdcard and OTG is via system settings - storage & USB. You can copy

Anything back to the internal memory - that's all you can do!

THE NEW FEATURES

There's no difference in the UI but many interesting changes and modifications in the system

#The multi window cut my attention although we had it in TW but its every welcomed

#Google now on tap is Nice

#Dose mode works but with full (stock) gapps I lost 6% of battery over night

Dose with slim gapps is way better with 2% battery loss over night

#Improvement on WiFi - unlike CM12.1 my WiFi can connect to a new network

While the phone is sleeping

#Dailer improvements - you can copy numbers that you just typed inside dailer

#Audio Fx improvement - combination of Angi kernel and Audio Fx was something Else in Marshmallow, so so sweet,dynamic and powerful.

#System animation, transition and scrolling lot better.

#Google settings now inside system settings

#default root works just fine but if you can't live with the # sign on status bar flash superSU

#App permission is way better - no matter the amount of permission an app requires you can choose to deny all or unnecessary permissions all by yourself.

#Even the android default Easter egg game has improved. I scored 14 on second attempt, never got 3 in lollipop

And many more options.

#I couldn't find System UI tuner in Ivan meler CM13

My Verdict

If you can't live without sdcard, wait for next updates

This is what lollipop should have been

It's a good improvement on lollipop.