Dr. Erich Langer
Dozent
3.91 (368 reviews)
4
active courses
0
removed courses
Jan 2021
first content date
Dec 2023
last content date
1640
total students
368
total reviews
3.91
average rating
10
total content length
Courses
Business Idea Generation & Idea Validation Masterclass
111
students
2 hours
content
Dec 2023
updated
$19.99
Growth Hacking - proven method to do plenty of Growth Hacks
342
students
1 hour
content
Nov 2021
updated
$19.99
Startup Masterclass - die Erfolgsvariante für dein Startup
193
students
4 hours
content
Sep 2021
updated
$19.99