[leran & study] making a custom ROM

Hey, at first many thanks to xda developers. I like Android smart phone when I meet XDA Android Development. If there is no android developments, many android users will choose iOS iPhone.
I want to make a custom ROM for S6/S6 edge, is there any developers can help me or give me advice? 🙋
I know S6/edge is still new system by SAMSUNG and many difficult things to hack them. Or I can do something for the S6/edge developers to learn and study? I have many free times. Thanks in advance.

Need help making a flashable zip from TWRP backup

So like the title says I would let you make it flashable zip from a twrp backup. Now before you all go crazy lol I have looked all over xda and I have followed every single guid I can find on doing it. Each time I do it it fails in TWRP when I try to flash it. Now I don't know if I am doing something wrong or what the deal is but for some reason it just will not boot it says fail every time I've tried with 7zip as well as WinRAR to make the zip and still nothing is there any kind of program or anything like that out there that can help me out can someone please point me in the right direction I definitely do not need my handheld just trying to figure this out and have been messing with it for the past 4 hours and getting pretty pissed off to be honest with you lol any help is appreciated thanks in advance.

Help making a flashable zip from a twrp backup

So like the title says I would let you make it flashable zip from a twrp backup. Now before you all go crazy lol I have looked all over xda and I have followed every single guid I can find on doing it. Each time I do it it fails in TWRP when I try to flash it. Now I don't know if I am doing something wrong or what the deal is but for some reason it just will not boot it says fail every time I've tried with 7zip as well as WinRAR to make the zip and still nothing is there any kind of program or anything like that out there that can help me out can someone please point me in the right direction I definitely do not need my handheld just trying to figure this out and have been messing with it for the past 4 hours and getting pretty pissed off to be honest with you lol any help is appreciated thanks in advance.

Sent from my Nexus 6 using XDA Free mobile app

Making US google now functions work outside the US

Ive been trying to get functions like ,what song is this? What tv show is this?

But all i get is ,this action is not supported in your country.

-Ive created a us google account using google voice to verify the account,
-My playstore has all the tabs
- i tried all types of vpns, hotspot,tunnrlbear and siphon
- i spoofed my location using fake gps

I have literall tried everything,

Anyone have any suggestions ?

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