Hello and welcome Alkline! You have come to great place to continue on your progress with brainwave entrainment. I will try to help you gain the effects of the isochronic tones. Please note that the more you listen to a specific tone the stronger the effects will become. You will be more susceptible to tones that have a frequency you are more accustomed to so any tone based on the Alpha region will probably be good for training or confirming they work.
I would recommend practicing a meditation technique to use for every time you use a tone. There is a simple yet very effective technique that I use that I will now help you learn. I learned the technique from a free ebook written by Seamus Anthony. I will provide a link to his website.http://psychedelicmeditation.com/
Just click on download link, I think you have to give him your email but I don't think he sends to advertisers or anything, he is just trying to get publicity for his band I think, which is not bad by the way, kinda sounds like Nirvana (now his solo music, his actual band).
Anyways, you should read the ebook, learn the technique, and then just meditate to the isochronic tones. I would recommend you do a few clean, straight-up meditation sessions just to get used to it first.
By the way, my favorite tones are NirvanaSleep (lmao, I think you know why), Purple (makes me feel so warm, heavy, and numb lol), Chakra Balancing (I actually get euphoric feelings from this one but I don't use theis one for feelings ;P), and well I guess I like all the tones here. I don't use a lot of recreational tones myself but I use quite a few spiritual and lucid dreaming tones, I also use some tones to help improve my school performance.