diff --git a/.gitignore b/.gitignore
index 12ade61..8dac351 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,4 +20,4 @@ token.*
 .env
 
 # NixOs related
-.venv/
\ No newline at end of file
+venv/
\ No newline at end of file
diff --git a/cogs/admin.py b/cogs/admin.py
index 7afda47..96533ee 100644
--- a/cogs/admin.py
+++ b/cogs/admin.py
@@ -1,5 +1,6 @@
 from logging import getLogger
 from pathlib import Path
+from urllib.parse import quote
 
 import discord
 import discord.ext.commands as commands
@@ -38,17 +39,30 @@ async def lesson(self, ctx: commands.Context, repo: str = "", lesson: str = ""):
         Get an embed from the README of a given lesson in a given repo.
         If no repo is given, takes the repo named after the current schoolyear : `INSAlgo-{year1}-{year2}`.
         If no lesson is given, takes the lesson with the highest number.
+        You can pass a lesson number for the current year, or the year of the repo followed by the lesson number, or the name of either or both.
         """
 
-        err_code, res = github_client.get_lesson_ressource(repo, lesson)
+        if lesson == "" :
+            lesson = repo
+            repo = ""
+
+        err_code, repo, lesson = github_client.find_lesson_ressource(repo, lesson)
+        err_code, res = github_client.get_repo_readme(repo, lesson)
+
 
         if err_code == 0:
             emb = embed_lesson(res).set_thumbnail(url="attachment://INSAlgo.png")
             logo = discord.File("data/INSAlgo.png", filename="INSAlgo.png")
             channel = self.bot.get_channel(RESSOURCES)
+
+            if not emb.url.startswith('http'):
+                file = emb.url
+                url = f"https://github.com/INSAlgo/{repo}/blob/main/{lesson}/{file}"
+                emb.url = quote(url, safe=':/')
+
             assert isinstance(channel, discord.TextChannel)
             await channel.send(file=logo, embed=emb)
-        
+
         else :
             if err_code == 5 :
                 res += "\nYou can also pass the exact repo name as an argument of this function."
diff --git a/utils/github.py b/utils/github.py
index 23ff88f..ef0abae 100644
--- a/utils/github.py
+++ b/utils/github.py
@@ -246,36 +246,67 @@ def get_INSAlgo_lessons(self, repo: str) -> tuple[int, str | list[str]] :
         
         return 0, [dir_["name"] for dir_ in self.lr_response(json=True)]
 
-    def get_lesson_ressource(self, repo: str = "", lesson: str = "") -> tuple[int, str] :
+    def find_lesson_ressource(self, repo: str = "", lesson: str = "") -> tuple[int, str] :
+        err_code, res = self.get_INSAlgo_repos()
+    
+        if err_code > 0 :
+            return 5, f"Could not get INSAlgo's repos :\n{res}"
+
         if repo == "" :
-            err_code, res = self.get_INSAlgo_repos()
-        
-            if err_code > 0 :
-                return 5, f"Could not get INSAlgo's repos :\n{res}"
-            
             cur_year = datetime.today().year
 
-            cur_name = f"INSAlgo-{cur_year-1}-{cur_year}"
+            cur_name = f"INSAlgo-{cur_year}-{cur_year+1}"
             if cur_name not in res :
-                cur_name = f"INSAlgo-{cur_year}-{cur_year+1}"
+                cur_name = f"INSAlgo-{cur_year-1}-{cur_year}"
                 if cur_name not in res :
                     return 5, "Could not find an appropriate repo for the current year. Name should be `INSAlgo-{year1}-{year2}`."
             
             repo = cur_name
-
-        if lesson == "" :
-
-            err_code, res = self.get_INSAlgo_lessons(repo)
-
-            if err_code > 0 :
-                return 6, f"Could not get lessons from `{repo}` :\n{res}"
-
-            try :
-                lesson = max(res, key=lambda s: int(s.split(' ')[0]))
-            
-            except ValueError :
-                return 6, f"No valid lesson name found in `{repo}`. Check `https://github.com/INSAlgo/INSAlgo-2022-2023` for reference."
-        
-        return self.get_repo_readme(repo, lesson)
+        else:
+            found = False
+            if repo not in res and repo.isdigit() :
+                for repo_name in res:
+                    if not repo_name.startswith("INSAlgo-") or len(repo_name.split('-')) != 3: continue
+
+                    _, year_a, year_b = repo_name.split('-')
+                    if int(year_a) == int(repo):
+                        repo = repo_name
+                        found = True
+                        break
+
+            if not found:
+                return 5, "Could not find an appropriate repo for the current year. Name should be `INSAlgo-{year1}-{year2}`."
+
+        # if lesson == "" :
+
+        err_code, res = self.get_INSAlgo_lessons(repo)
+
+        if err_code > 0 :
+            return 6, f"Could not get lessons from `{repo}` :\n{res}"
+
+        if lesson == "":
+            best = 0
+            for l in res:
+                num = l.split(' ')[0]
+                if num.isdigit() and int(num) > best:
+                    best = int(num)
+                    lesson = l
+        else:
+            found = False
+            for l in res:
+                if l == lesson:
+                    found = True
+                    break
+                elif lesson.isdigit():
+                    num = l.split(' ')[0]
+                    if num.isdigit() and int(num) == int(lesson) :
+                        lesson = l
+                        found = True
+                        break
+
+            if not found:
+                raise Exception(f"No valid lesson name found in `{repo}`. Check `https://github.com/INSAlgo/INSAlgo-2022-2023` for reference.")
+
+        return 0, repo, lesson
 
 github_client = GithubClient()
\ No newline at end of file