Regarding studying Non-Islamic Financial Laws, Dr.Monzer Kahf, a prominent economist and counselor said:

“it is allowed to study these subjects because what is prohibited is
practicing them not knowing them. We have clear verses in the Qur’an and
clear Sayings in the Sunnah that prohibit interest (Riba) including giving
it, writing it and be a witness to it. But there is no prohibition of knowing
it. I myself know it very well although I do not practice it.