Sharepoint2013 ctx and Js : Retrieve the value of a field from a list

I'm a totally beginner and totally stuck to a point in my Sharepoint project.

What i would like to achieve:

• part 1 : retrieve the current user's Department's name


• part 2 : retrieve the department's website's url from a custom list using ctx, and jquery. (I'm totally new to REST, so please no REST answer)

Structure of the custom List:

• name = "O Services"


• field's name i would like to retrieve from that list : "URLSitesServices"


• field's name of the department : "Service" So, for example, in O Services, i have an item called (field Name) "Information Service", whose URLSitesServices is "http://mysite/service".

So, on site homepage, if user's department is Information Service, i would like to go in O Services, search for the Service called "Information Service" and retrieve its URLSitesServices

What i've already done:

part 1 is complete, i'm able to retrieve the current user's department's name.

i'm stuck in part 2 : i don't know how to ask for O Services, i don't know how to retrieve the different items, nor their different fields...

Here is my code so far :

SP.SOD.executeFunc('SP.js', 'SP.ClientContext', function() {
       SP.SOD.executeFunc('userprofile', 'SP.UserProfiles.PeopleManager', function() {
           getMyProfileProperties(
              function(profileProperties){
                 var fullProperties = profileProperties.get_userProfileProperties();
                 var myDepartment = fullProperties["Department"];
                 if (myDepartment){
                    var ctx2 = new SP.ClientContext();
                    var targetList = ctx2.get_web().get_lists().getByTitle('Services Osiris');
                    console.log(myDepartment);
                 }else{
                    console.log("nothing");
                 }
              },
              function(sender,args){
                  console.log('Error occurred while getting user profile properties:' + args.get_message());
              }    
           );
       });
    });

My targetList does just return a array, no useful values. i don't know how to retrieve the items, i saw get_items() etc.. but it does not work (i'm sure i'm making a lot of mistakes too)

Coul you please give me some hints, some clues to begin with, please? Thanks a lot in advance!