Update README.md

Instructions written out in more detail.

README.md

@@ -6,8 +6,11 @@ Converts feedback data that has been collected from courses.mooc.fi exercises to
 
 1. Download the program from the releases on the right side of this page.
 2. Create a new empty folder where you'll place the program. The program, the input files and the output files will be placed in this folder.
-3. Run the program once to create the configuration file on the same folder.
+3. Run the program once (double click the feedback-data-converter icon) to create the configuration file (config.yml) in the same folder.
   - If you're running Linux, you'll need to allow executing the file as a program. (Right click the file, select Properties, go to Permissions tab and check the "Allow executing file as program" checkbox.)
-4. Export exercise tasks and submissions from courses.mooc.fi and place them to a folder called `data`.
-5. Run the program. The output file will be placed in a folder called `output`.
+4. Edit the configuration file (config.yml): As show in the template, fill in `chapter_number` and `exercise_id` for each feedback exercise you want to include in the report. How to find the `exercise_id`? Open the course material in admin view → go to Exercises tab → click the name of the exercise → copy the string between exercises/ and /submissions, for example: 91fdaef8-9519-5a02-8f5f-53ba98xxxxx
+6. Create a folder called `data`
+5. Export exercise tasks and submissions from courses.mooc.fi and place them to a folder called `data`:
+   - Open course material in admin mode -> Overview -> scroll down -> Click `Export submissions (exercise tasks) as CSV` and `Export exercise-tasks as CSV`
+6. Run the program (double click feedback-data-converter icon). The output file will be placed in a folder called `output`.