Constantijn Simon
Product developer
3.87 (15 reviews)
7
active courses
2
removed courses
Jul 2020
first content date
Aug 2024
last content date
1882
total students
15
total reviews
3.87
average rating
6
total content length
Courses
Customer service course: descalation in person, call or text
219
students
1 hour
content
Aug 2024
updated
$19.99
Dating for busy professionals in their thirties and forties
12
students
42 mins
content
Aug 2024
updated
$44.99
Habits of Successful People: Building Routines for Winning
1
students
1 hour
content
Aug 2024
updated
$19.99
Are you an industrial designer? Sell your products online
293
students
42 mins
content
Jan 2021
updated
FREE
Develop your own product for Shopify, Kickstarter or Amazon
705
students
40 mins
content
Aug 2024
updated
$19.99
How to meet friends & lovers in your thirties and forties.
13
students
36 mins
content
Aug 2024
updated
$19.99