This is going to be a very short conversation. However, the links it redirects gives lot of information, interesting and extensive reading:
Seeker 1: See below links. i find it very interesting. http://www.swamij.com/yoga-sutras-21225.htm , http://wisespiritualideas.blogspot.com/2012/09/patanjali-yogasutras-ch3-vibhuti-paadha.html?m=1
Read these from beginning of each chapter.
Seeker 2: Ok. These are really advanced concepts! They are not just very interesting…they are amazing! All this is there in Srimad Bhagavatam also. All this is there in Kapila Muni’s Samkhya yoga section and it is explained in much simpler way. 3rd canto chapter 26 and 27. (https://vedabase.io/en/library/sb/3/26/ & https://vedabase.io/en/library/sb/3/27/.
An interesting analysis of Srimad Bhagavatam covering all the above is mentioned in this link: https://www.esamskriti.com/e/Spirituality/Philosophy/Srimad-Bhagavatam~-A-Comprehensive-Blend-Of-Bhakti,-Jnana,-And-Vairagya-6.aspx