You don’t need a new technique for every kind of information out there, but very broad questions tend to lead to very broad answers.
If you read the short, free ebook and then post a few very specific examples of what you’re trying to memorize, I think the responses might give you a better idea on how to apply the techniques to various kinds of information.
“How do I learn memory techniques for biology?” is similar to the question “How do I learn Python?” Without knowing exactly where you’re stuck, the answer will be very broad, like “read this 500-page Python book” or “watch this 20-hour Python course on Udemy.”
If the question is more specific, like “How do I write a Python program that tells me the weather?” then it’s easier to answer. The more questions like that you ask, the clearer Python programming will be, even if you eventually need to use Python to build things other than a weather program.
Other people might come along with different suggestions, but I think there will be more of them if you post very specific examples.