Drupal 7.x

Hi  I want to upgrade my drupal csm from a FTP , already download D8 and put mi web in maintence mode.

I cant understand where I replace the core folder or Vendor folder. 

This is my files on ftp. 

ftp files  folder

tmpsite
tmp
public_html
oxdata
mail
logos
etc
.trash

Public_html files

thumbnails
themes
sites
scripts
profiles
new_img
modules
misc
includes
img
cgi-bin
video

I have a view using one content type: fee_schedule
The view contains fields for species, keywords (hidden), and the title.

The filters need to show ALL species except when searching by keywords.  The keywords field and the title field are combined using Global Combine fields filter that is exposed.  

How to match few mentors with many mentees randomly using the modules of Drupal CMS?

There are many applicants to train and few to teach and this match has to happen randomly to avoid any one gaming the process. So we need a matching system which randomly allocates mentors to the mentees.

Any suggestions please.

I am looking for a module that acts similar to a Blog -> listing posts one after the other on one page. Any suggestions?

Comment settings in "Permissions" applies to all content type. I want node authors of only one of my content type to have permission to "Administer comments and comment settings". This way node authors can enable/close/hide comments as they see fit on that one specific content type. Don't really want project/nodeaccess. I'm hoping for a more specific existing module, or PHP snippet for template.php or custom module. 

Appreciate any help.

Hello,

I know I can change a block weight on /admin/structure/block/, but can I change block position on different content type page without coding ?