The guidance on the Arhayas.com website is to start off with the meditation techniques on this site first of all https://www.arhayas.com/pages/techniques
Overall I would say Kathara Level 2 requires a great deal of concentration in terms of listening to the techniques and reading the supporting information. You can certainly do these techniques to a good standard without having to watch the DVD's. However, the information included in the DVD's will explain in more depth some of the concepts and information. I personally have done these techniques without watching the DVD material.
I did these techniques over the autumn/winter time, so there is something about that peaceful time that I personally find will be beneficial to these techniques.
Some of the techniques are very challenging because of the concentration required. Two of the most difficult techniques are 'Activating the Lotus seed' and 'Lotus Run'. But at the same time this set
includes some very enjoyable, interesting and beneficial techniques. This includes 'Lotus Hands, Hara Center' 'Le-eTOR-A Lota', 'Inner Caverns Journey' and 'Le-Adora Imprinting'.
The supplementary information includes discusses miasms in the energetic field, which are otherwise called Shona disposition fields. It is very well explained and interesting information which supports the understanding of the techniques.