if it is ok, or i have to enter some code to reach that to resumen where i was
No, you just enter to that directory.
This is mandatory? as far as I understand if I dont have problems with Sublime Text and the files it is not needed right?
I had been using Notepad++ which changes the permissions. I don't know if that's true with Sublime Text, but it's generally true for most Windows notepads.
3- before building, how I am suposed to change the genesis block exactly?
You need to change the values I've told you in
#2 from
chainparams.cpp.
1- once finished the genesis block configuration, how i am supossed to build this rightly? wich are the "codes" to enter on terminal for it?
The commands remain the same. Once you've generated a valid genesis block, from the program you've written, you just replace those few values from chainparams.cpp and you're done.
2- how to mining the first block? wich steps I should follow?
[ANN] Genesis Block Generator3- how to save the genesis block of the chain in the computer? I mean, for later use if the chain is being mined from diferent clients and I wan to update it?
You can't update the genesis block once there are new blocks mined upon it. Unless I didn't understand your question.
4- how I am supossed to update it in the future?
You download the new version of Bitcoin Core and redo those steps.
should I upload it to github once is start mining?
Why do you ask me such thing? It depends on what you want to accomplish.
ps: about the update thing, I am just asking of how to update when we talked time ago of downloading and changing the new core and upload it again, anyways, let me finish this first and then we see the rest