Lost in IP confuse

Hello.
Before 2 years i was try to make a MU server offline router version and i was make it.
For a newbie i think its a little hard to understand some configurations.
Of corse some things you do them, just cos must do, so you dont care why you do it.
But if u must calculate a mu server release with no guide, its difficult to complete it.

My questions are:
1.Can i make a Mu server on my non static IP? (the answer is, yes i can, but every time my router restart, need to config again, and the ppls need to crack the main.exe? ... or i cant cos the IP is not static?)

2.If i ll use the no-ip.org, its easyer cos only i have to do is to change the ip on my account in there?

3.I dont understand what means global ip, or the others ip, cos when i use cmd,ipconfig i see my IP is 192.168.1.2 for example, but when i go to What is my ip? - WhatIsMyIp.org i see 79.166.221.56 for example... so what does these means?

4.what is the 127.0.0.1 ip? is a default router? so when a server has a guide that say you change that and that, and there is somewhere the 127.0.0.1 means that is router version, oflline? so i can ask, why some .dat files have that 127.0.0.1 and u no need to change it?

5.The website must be on the same PC?

6.I was make a mu server S3.E1 before 1 week, and i was stop continue it cos when i was have GameServer + GameServerCS, when i swap to CS i was got disconnect after 70 seconds. When i press G and look my guild, when i was in gameserver i see 1 and when i swap to CS it was say 2, so i was jump to other server. Its not solved with Microsoft looping adapter, you think it was a kind of calculation? im afraid not happens to the next muserver i ll try to make.

These are my questions and the answers i need is about the diference with a offline and online muserver, i need to make online for fun, but i dont see the releases explain that well.
THX!

I can't answer everything but ill try:

You will need to configure server files if router restarts so don't do it on purpose. Website can be on any computer.
In this case 79.166.221.56 is your global ip.

do you know how exactly to setup a loopback adapter? And do you know what's port forwarding?
Server files must be neat and in order to make sure server would stay up and it depends on the computer which you are using.

Never let your hands down in making any kind of server. Start off with 97d and finish when you reach s6. Learn what are the main files for. Never stop no matter what. Everything is possible

Thats what i think

1. Buy vps or host VDS .

2. install ur server there and put on files the server IP.

thats all you need

if u wanna host on ur own pc, then u must put only ur LAN ip on ur files and main.exe and done.

in main.exe putt your dns and its work like IP .
And do the same in other files on data and if ip changes u just putt the dns .
To do that go to site and make account . download the DUP put your mail and your pass select the dns from edit
and your are ready.
The 192.168.2.1(127.0.0.1) its your local ip . (LAN) the ip of your computers.
The 79.166.221.56 its the global . the other must connect to your mu server with the global ip not with local .
for the website if u want do this on the same .