After high school, I sent an application to a gymnasium that was unique in Sweden because it also had a chess academy. I studied there for 3 years under the guidance of International M Nils-Gustaf Renman. He was a Swedish champion in 1978 and also 1980.
This gave me a solid foundation and changed the way I thought about the board. In my final year, I qualified for our school's representative team. We won the national school championship and also the Nordic finals in Iceland.
When I started coaching online my first student had a clear goal (qualifying to his national olympic chess team) and we defined together what areas to focus on. I put in lots of time into preparing and building a portfolio of useful cases to study both in calculation, tactics, and how to play in different structures. I try to vary lessons so we work on different things all the time. Since then, I have worked with many different players usually ranging from 1000 to 1900 rating.
At my local chess club, Malmö AS, I also helped out with kids during school breaks when we had an open house. We taught the basics and organized small tournaments.
I also occasionally gave some lectures with a demo board for our local Thursday study group. Finding a theme and showing different examples such as prophylactic moves, domination of pieces, or showing games from our team matches leading up to our victory in the club team championship 2015/16
The group was from beginner to approximately Elo 1800.
Best win in blitz on that other chess site :) against GM Daniel Sadzikowski.
My highest rating on that other site was 2327.
Highest rating on Lichess: 2481 10th October. 2021
My highest rated opponent that I won against in an online blitz game was probably Varushan Akobian in 2015 on Icc. I think he was top 5 in the US and around 2660 Elo then; however I won material early on because of a hidden tactic :) So that one I got a bit lucky.