Hi Vladimir and Kumar,
I am sorry to hear that there is some confusion regarding the benefits of a subscription with RealPars, I will happily clear that up for you.
The benefits of a paid subscription is that you obtain access to our complete course library (which contains over 400+ video courses). Without a subscription you can only view the free PLC Hardware course which contains 19 video courses.
Without a subscription the rest of the video courses are locked - you can see this by the little "lock" icon on the right bottom side of the video.
As you mentioned yourself, by subscribing you will also obtain full access to our engineers for any questions you have.
When it comes to frequently adding video courses to our library, we always have a new video course live on our course library every Friday. As a subscriber you will receive an email notification about this new upload as well.
Hopefully, this clears things up a bit. If you have any further questions, feel free to reach back out!