diff --git a/src/controllers/course.controllers.ts b/src/controllers/course.controllers.ts
new file mode 100644
index 0000000..44b4aed
--- /dev/null
+++ b/src/controllers/course.controllers.ts
@@ -0,0 +1,117 @@
+import { Request, Response } from "express";
+import User from "../models/user.model";
+import Course from "../models/course.model";
+import Flow from "../models/flow.model";
+
+export async function createCourse(req: Request, res: Response) {
+  const userId = req.user?._id;
+  const { title, description, flowsId } = req.body;
+
+  try {
+    if (!userId) {
+      return res.status(400).send("userId is required");
+    }
+
+    if(!title) res.status(400).send("title is required");
+
+    
+    if(!description) res.status(400).send("description is required");
+
+    const user = await User.findById(userId);
+    if (!user) {
+      return res.status(404).send("User not found");
+    }
+
+    if (await Course.findOne({ title: title })) {
+      return res.status(400).send("Course already exists");
+    }
+    /*      IMPLEMENT THIS LATER
+        let flowsNotFound: string[] = [];
+        console.log(flowsId);
+        if(flowsId.length > 0){
+            for (const flow of flowsId) {
+                const dbflow = await Flow.findOne({ _id: flow });
+                if (!dbflow) {
+                    flowsNotFound.push(flow);
+                }
+            }
+        }
+     
+        if (flowsNotFound.length > 0) {
+            return res.status(404).send("Flows " + flowsNotFound.join(", ") + " not found");
+        }
+*/
+    const course = new Course({
+      title: title,
+      description: description,
+      author: userId,
+    });
+
+    if (flowsId) for (const flow of flowsId) if (flow!=null) course.flows.push(flow);
+
+    console.log(course);
+    await course.save();
+    const courseRes = await Course.find({title: course.title})
+    .populate("author")
+    .populate("flows");
+
+    return res.status(201).json(courseRes);
+  } catch (err) {
+    console.error(err);
+    res.status(500).send;
+  }
+}
+
+export async function deleteCourse(req: Request, res: Response) {
+  const courseId = req.params.id;
+  const userId = req.user?._id;
+  try {
+    if (!userId) {
+      return res.status(400).send("userId is required");
+    }
+
+    const user = await User.findById(userId);
+    if (!user) {
+      return res.status(404).send("User not found");
+    }
+
+    if (!courseId) {
+      return res.status(404).send("courseId is required");
+    }
+
+    const dbcourse = await Course.findById(courseId);
+    if (!dbcourse) {
+      return res.status(404).send("Course not found");
+    }
+
+    if (dbcourse.author !== userId && userId != "admin") {
+      return res.status(403).send("You are not the author of this course");
+    }
+
+    await Course.deleteOne({ _id: courseId });
+
+    return res.status(204).send();
+  } catch (err) {
+    res.status(500).send;
+  }
+}
+
+export async function getCourses(req: Request, res: Response) {
+  try {
+    const q = req.query?.q?.toString();
+    const me = req.query?.me?.toString();
+    const query: any = q ? { title: { $regex: q, $options: "i" } } : {};
+ 
+    if (me) {
+      query.author = req.user?._id;
+    }
+
+    const courses = await Course.find(query)
+      .populate("author")
+      .populate("flows");
+    return res.json(courses);
+  } catch (err) {
+    console.error(err);
+    return res.status(500).send;
+  }
+}
diff --git a/src/controllers/execution.controller.ts b/src/controllers/execution.controller.ts
index c545d96..8027fce 100644
--- a/src/controllers/execution.controller.ts
+++ b/src/controllers/execution.controller.ts
@@ -24,7 +24,7 @@ type GetNextExerciseV2Body = {
 
 type ProgressBody = {
   ctxId: string;
-  satisfiedConditions: string[];
+  satisfiedConditions?: string[];
   flowId?: string;
   authorId: string;
 };
@@ -191,6 +191,9 @@ export async function progressExecution(
     if (flow.author != authorId && authorId != "admin")
       res.status(400).send("You need to be the author to unlock the progress");
 
+    if (!satisfiedConditions)
+      return res.status(404).send("Error satisfied conditions missing");
+
     if (satisfiedConditions.length === 0) return res.status(200).json(null);
 
     const algo = flow?.execution?.algo ?? "Random Execution";
@@ -213,6 +216,39 @@ export async function progressExecution(
   }
 }
 
+export async function resetProgress(
+  req: Request<{}, any, ProgressBody>,
+  res: Response,
+  next: NextFunction,
+) {
+  const { ctxId, satisfiedConditions, authorId } = req.body;
+  try {
+    const ctx = ctxs[ctxId];
+
+    if (!ctx) {
+      return res.status(400).json({ error: "Ctx not found!" });
+    }
+
+    const flow = await PolyglotFlowModel.findById(ctx.flowId).populate([
+      "nodes",
+      "edges",
+    ]);
+
+    if (!flow) return res.status(404).send();
+
+    if (flow.author != authorId && authorId != "admin")
+      res.status(400).send("You need to be the author to unlock the progress");
+
+    //delete context with ctxId==ctx
+    //idea: ctxs[ctxId] remove
+    // Object.entries(ctxs).splice()
+
+    return res.status(200).send("Execution resetted correctly");
+  } catch (err) {
+    next(err);
+  }
+}
+
 export async function getNextExercisev2(
   req: Request<{}, any, GetNextExerciseV2Body>,
   res: Response,
diff --git a/src/models/course.model.ts b/src/models/course.model.ts
new file mode 100644
index 0000000..dba96f4
--- /dev/null
+++ b/src/models/course.model.ts
@@ -0,0 +1,30 @@
+import mongoose, { Document } from "mongoose";
+import { v4 as uuidv4 } from "uuid";
+import validator from "validator";
+
+export type CourseDocument = Document & {
+  title: string;
+  description: string;
+  author: string;
+  flows: string[];
+};
+
+const courseSchema = new mongoose.Schema<CourseDocument>({
+  _id: {
+    type: String,
+    required: true,
+    default: () => uuidv4(),
+    validate: {
+      validator: (id: string) => validator.isUUID(id),
+      message: "Invalid UUID-v4",
+    },
+  },
+  title: { type: String, required: true },
+  description: { type: String, required: true },
+  author: { type: String, required: true, ref: "User" },
+  flows: [{ type: String, ref: "Flow" }],
+});
+
+const Course = mongoose.model<CourseDocument>("Course", courseSchema);
+
+export default Course;
diff --git a/src/routes/course.routes.ts b/src/routes/course.routes.ts
new file mode 100644
index 0000000..e4a0593
--- /dev/null
+++ b/src/routes/course.routes.ts
@@ -0,0 +1,15 @@
+import express from "express";
+import { checkAuth } from "../middlewares/auth.middleware";
+import * as CourseController from "../controllers/course.controllers";
+
+const router = express.Router();
+// cambiare tutto con flow
+
+router.route("/:id").delete(checkAuth, CourseController.deleteCourse);
+router
+  .route("/")
+  .post(checkAuth, CourseController.createCourse)
+  .get(checkAuth, CourseController.getCourses);
+
+// get enrolled courses
+export default router;
diff --git a/src/routes/execution.routes.ts b/src/routes/execution.routes.ts
index f7969f1..997a5fa 100644
--- a/src/routes/execution.routes.ts
+++ b/src/routes/execution.routes.ts
@@ -11,6 +11,7 @@ router.post("/actual", ExecutionController.getActualNode);
 router.post("/next", ExecutionController.getNextExercisev2);
 router.post("/progressInfo", ExecutionController.getFlowCtxs);
 router.post("/progressAction", ExecutionController.progressExecution);
+router.post("/resetProgress", ExecutionController.progressExecution);
 router.post("/cmd", ExecutionController.sendCommand);
 
 // router.post("/next", ExecutionController.getNextExercise)
diff --git a/src/routes/index.ts b/src/routes/index.ts
index 903ab60..f88cf80 100644
--- a/src/routes/index.ts
+++ b/src/routes/index.ts
@@ -1,5 +1,6 @@
 import express from "express";
 import flowRouter from "./flows.routes";
+import courseRouter from "./course.routes";
 import executionRouter from "./execution.routes";
 import userRouter from "./user.routes";
 import searchRouter from "./search.routes";
@@ -10,6 +11,7 @@ import conceptRouter from "./concept.routes";
 const router = express.Router();
 
 router.use("/api/flows", flowRouter);
+router.use("/api/course", courseRouter);
 router.use("/api/execution", executionRouter);
 router.use("/api/user", userRouter);
 router.use("/api/search", searchRouter);