For those seeking online introductory resources in molecular biology and biochemistry, several key texts are recommended. "Molecular Biology of the Cell" by Alberts et al. and "Biochemistry" by Stryer are highlighted as excellent foundational books. While NCBI provides access to these texts, users must utilize the search feature to navigate, as direct table of contents navigation is not available. For beginners, "Essential Cell Biology," often referred to as "baby Alberts," is suggested as a more accessible alternative, available in university libraries. Additionally, a website featuring a variety of biology books in PDF format is mentioned, though many links may be inactive.