Jan Kinzler

Very smart. Extremely fast and efficient; has published a book in three languages so far; has a wealth of experience despite being only 29; has written a few books of his own—awesome!

Working with Book Leads was excellent. I highly recommend them to anyone who wants to write a book or has already published one. They provide expert support, especially when it comes to marketing and positioning. Professional, reliable, and highly recommended!

After 40 years of futile attempts to write a book, Jan Kinzler has managed to turn this wish into reality. What was important was
1. structuring the content
2. regular help with writing the book.
3. editing
4. development of a book series:
In addition
Support in setting up your own publishing house and translation into English.

Mr. Kinzler looked after us very well with his high level of expertise and experience in practical implementation! I appreciate his motivating, consistent, reliable and trustworthy way of working!

I really enjoyed our respectful and successful collaboration. Thanks to it, my book has become a bestseller. I’ve also received many valuable suggestions that are a great help in my ongoing work as an author. Thank you very much, Jan—I look forward to working with you again. All the best, and warm regards, Renate

I was very fortunate to work under the leadership of Mr. Jan Kinzler, and I can say with conviction that he is one of the best bosses I have ever had. Mr. Kinzler brings an impressive combination of professional expertise, leadership skills, and humanity, which is evident in every collaboration.

What I particularly appreciated about him was his ability to motivate the team and make each individual feel valued. He always made a point of fostering individual strengths and succeeded in creating a work environment where people could truly thrive. His decisions were always well-thought-out and goal-oriented, and you always had the feeling that he kept the big picture in mind without losing sight of the details.

Even in stressful situations, Mr. Kinzler was a rock. He remained calm, clear, and solution-oriented, which was incredibly motivating, especially during challenging phases. His positive attitude and dedication rubbed off on the entire team, and it was a true privilege to work with him.

Especially in client projects—particularly book projects—Mr. Kinzler repeatedly demonstrated his exceptional ability to manage complex requirements. He had a special knack for understanding clients’ wishes and working with the team to turn them into excellent results. His clear communication and structured approach played a key role in ensuring that even the most challenging projects were completed successfully and on time.

Mr. Kinzler was not only a great boss but also a mentor from whom I learned a great deal. I am truly grateful for the time I was able to work with him, and I am certain that he will be an asset to any team and any company he works for.

Jan Kinzler provided me with very professional support in finalizing and marketing my first book. Without him, I definitely wouldn’t have been able to complete the book project. His network of contacts and his collaboration with other service providers (graphic designers, typesetters, editors, proofreaders, and Amazon) were invaluable, and he coordinated everything exceptionally well. I’m more than happy to recommend him. He’s a trustworthy partner for this and other projects.

Jan Kinzler helped me create a landing page and the accompanying campaign for my book “From Idea to Bestseller”—and the result was simply impressive!
From the very beginning, Jan impressed me with his professionalism, creativity, and dedication. He not only understood my vision but also took it to a whole new level with his ideas and expertise. Thanks to his work, all of the campaign’s goals were achieved.

I can wholeheartedly recommend Jan Kinzler and look forward to working with him again in the future.

I can recommend Jan Kinzler without reservation. From the first contact, the cooperation was characterized by personal openness & professional expertise. Despite his still young age, Jan absolutely understands his craft. With a lot of intuition for his counterpart, he developed a successful concept & was approachable at any time during the implementation. Thanks to him, my book not only became more visible on Amazon, it even landed on the bestseller list. Therefore, my clear recommendation for all authors: Jan Kinzler is the number 1 for the visibility of your works on Amazon!

Clear, personal, authentic, competent

With Jan Sergienko and his team I planned, wrote and marketed my first finance and investment book. From day one, I felt well taken care of and looked after. So often, during the writing process, I doubted myself, got stuck. Jan and his team were there for me virtually day and night, helping me with important practical tips and content-related assistance.

Jan completely took care of all the editing, publishing and marketing for me. And the book marketing totally surprised me. Jan masters this marketing par excellence. I already had high expectations of the team, but these results that Jan and his team achieved for my book exceeded all my expectations by miles. My book reached number 1 in the relevant categories "Shares" and "Investment" and I am very proud that I have landed a real bestseller with it.

I can't think of any better book marketing than Jan's and I highly recommend him to anyone who wants to write a book. Thank you very much, Jan for these great results,

During my collaboration with Jan Kinzler, I have experienced him as very professional and extremely capable and experienced in his field of expertise - the creation and marketing of books, as well as the support of these processes. Jan is a person who says very clearly and directly in a business context what he thinks and why. This makes working with him not only pleasant, but also very efficient and goal-oriented. Whoever works with Jan Kinzler can be sure of achieving the goals he has set for himself. I can definitely recommend him as a contact person for the above-mentioned topics to anyone who is looking for advice or support in these areas. Overall, I look back extremely positively on our time together and am grateful to have gotten to know Jan!

He knows exactly what he's doing. He brought my books back into visibility on Amazon. Great cinema.

I am more than satisfied with the cooperation with Jan Sergienko. He gives valuable tips, is efficient and goal-oriented and convinces with expertise and experience. Even in problem situations, he is very concerned, objective, competent and motivates you to develop your own solution skills. You notice very quickly with him: he knows what he is talking about!
Thank you for the great cooperation!

Jan is very personable and competent in his areas of expertise. In addition, he always conveys a positive feeling to his customers and employees. I have always felt in good hands with him.

The cooperation with Jan Kinzler was always characterized by great reliability and professionalism. It was a collaboration at eye level. Can always recommend him!

Jan Kinzler has been my customer with his books for over three years now. Working with him couldn't be better. The books I have edited for him so far have all been very interesting. I always learn something new myself, as it should be, because the topics of his books are so wide-ranging.
The process of an order for him runs smoothly, from the placing of the order to the payment of the invoice. Should there be a query - which is rare enough - he can be reached very quickly so that we can solve small problems immediately.
Communication with Jan Kinzler is always very stimulating. He is a person who can also listen to others and has a great deal of knowledge himself.
I can simply recommend Jan Kinzler and his company.

Jan loves what he does. You immediately notice that he himself has a wealth of practical experience, which he uses thoughtfully and strategically. Thank you Jan, for my book project you are the perfect companion.

A true professional & master of his work! Years of experience results in this top expertise, which Jan brings. I found the collaboration with Jan really great & can only recommend him!

A master of his trade! Jan knows exactly what is important when you want to publish your own book and do it successfully and with high profit!

Thanks again for the great cooperation Jan! I realized every day what a complete professional you are and how little I actually knew about how to make a book successful!

My business has already scaled up very well and my investment was already out a few weeks after Jan's assignment.

I'm excited for the future and look forward to even better results now thanks to my new book!

Absolute recommendation from me!