Why: This few modifications to this block make it easier for those users that are enroled in many courses to find them using this block.

How: It adds an extra line with the category name which the course belongs to, sorting them alphabetically inside.

Code:
/blocks/course_list/block_course_list.php:

37 if (empty($CFG->disablemycourses) and
38 !empty($USER->id) and
39 !(has_capability('moodle/course:update', get_context_instance(CONTEXT_SYSTEM)) and $adminseesall) and
40 !isguest()) { // Just print My Courses
41 if ($courses = get_my_courses($USER->id,'category ASC, fullname ASC')) { //mu: Get courses sorted by category
42 foreach ($courses as $course) {
43 if ($course->id == SITEID)

{ 44 continue; 45 }

46 if($cat == $course->category)

{ //mu: If I'm inside the same category, don't print category's name 47 $linkcss = $course->visible ? "" : " class=\"dimmed\" "; 48 $this->content->items[]="<a $linkcss title=\"$course->shortname\" ". 49 "href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->fullname</a>"; 50 $this->content->icons[]=$icon; 51 continue; 52 }

53 $cat = $course->category;
54 $catname = get_record('course_categories', 'id', $cat);
55 $this->content->items[] = "<strong>".$catname->name."</strong>";
56 $linkcss = $course->visible ? "" : " class=\"dimmed\" ";
57 $this->content->icons[]='';
58 $this->content->items[]="<a $linkcss title=\"$course->shortname\" ".
59 "href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$course->fullname</a>";
60 $this->content->icons[]=$icon;
61 }
62 $this->title = get_string('mycourses');
63 $this->content->footer = "<a href=\"$CFG->wwwroot/course/index.php\">".get_string("fulllistofcourses")."</a>...";
64 if ($this->content->items)

{ // make sure we don't return an empty list 65 return $this->content; 66 }

67 }
68 }