Can also describe the whole thing about the Devta like – who was the god, what the work was done by god and everything with simple words in a story.
These were something hard but now this is so easy to know your Ishta Devta by any jyotish. They can tell you the whole detail of your Ishta Devta by their jyotish tantra.
Now it is easier just because of internet. So, you can also know your ishta devata free from online. This is as easy as your daily conversation. You just have to visit on jyotish site and have to fill the detail whatever asked by site and then there you will see the detail of your Ishta Devta that will appear on the site.
Suppose your date of birth is 29 april 1996 then your Ishta Devta is Maa Kali. This information is taken from bagulamukhi jyotish tantra site.