🙏in need of engineering book pdfs

Iam in third year or artificial intelligence and data science degree from sppu . I don't have funds to buy books . I've always used online PDFs to study from . But now I can't find PDFs of ANN artificial neural network and CC cyber security of technical publications. Can anyone please send me pdfs of these books of technical publications as i prefer studying from it . It would be an immense help.🙏.