I dont have formal training in coding, so I would like some input in my code. It is working really well, without any issues. I just wanted to see if I can somehow improve my code. I divided the major things into sepearte function.

    (function($) {
        // Use _ to template the resultsTemplating details
        function resultsTemplating(data, inputValue) {
            var results = data,
                resultsTemplate = _.template($("#results-template").html()),
                resultingHtml = resultsTemplate({
                    results : results,
                    searchVal : inputValue,
                    amount: results.length
                });
            
            // place the generated data into the html
            $("#results-container").html(resultingHtml);
        }
        // Use _ to template the overlay details
        function overlayTemplating(data, id) {
             // loop through JSON and match clicked element, then template   
             for(var i = 0; i < data.length; i++) {
                if(data[i].created == id) {
                    var overlayTemplate = _.template($("#overlay-template").html()),
                        overlayHtml = overlayTemplate({
                            name : data[i].name,
                            username : data[i].username,
                            language: data[i].language,
                            url: data[i].url,
                            description: data[i].description
                        }); 
                        

                }
            }
            // place the generated data into the html
            $("#overlay-container").html(overlayHtml);
        }
        // Grab Deatils of clicked node, and template it
        function repoDetails(data, id) {
            var container = $('#overlay-container');
            container.fadeIn('fast');

            overlayTemplating(data, id);

            // Closes the overlay
            container.find('.close').on('click', function() {
                container.fadeOut('fast');
                return false;
            });
           
                       
        }
        // Scroll Back to the top of the page
        function backToTop() {
            $('html, body').animate({
                scrollTop: 0
            }, 'fast');
        }
        function searchGit() {
            //grab value of search field
            var search = $('#search').val();

            // Validates entered value
            if (search.length) {
                $(this).find('.error').hide();
                backToTop();

                //pull json data from url
                $.ajax({
                    url: 'https://api.github.com/legacy/repos/search/' + search,
                    dataType: 'json',
                    cache: true,
                    success: function(data) {

                        var results = data.repositories;

                        $('body').addClass('post');
                        $('#results-container').show();

                        // use the results to template the results html using _
                        resultsTemplating(results, search);

                        $('.viewDeatails').on('click', function(e) {
                            var id = $(this).attr('href');

                            // use the results to template the repo details html using _
                            repoDetails(results, id);

                            e.preventDefault();
                        });
                    }
                });

                // Back to Home
                $('.logo').on('click', function() {
                   $('body').removeClass('post'); 
                   $('#results-container').hide();
                });
            } else {
                // Show error if search field is empty
                $(this).find('.error').fadeIn();
            }

            return false;
        }

       $(function() {
        if($('body').hasClass('js')) { 

            // ANIMATIONS
            $('#search').focus();

            $('.logo object').addClass('scaleInOut').one('webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend', function() {
                $(this).animate({
                    left: 0,
                    marginLeft: 0},
                    400, function() {
                     $(this).next().addClass('fadeInDown').one('webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend', function() {
                        $(this).css({
                            opacity : 1
                        });
                          $('form').addClass('fadeInUp').css({opacity : 1});
                          setTimeout(function() { $('.footer').fadeIn(); }, 400);
                     });
                });
            });  

            // Search Event
            $('#searchForm').on('submit', searchGit);
        }
       });
    })(jQuery);