Book-recommendation: Biochemistry I need to have a book which covers following topics two may also be fine: (a) Structure and role of carbohydrates, fats, fatty acids and cholesterol, proteins and amino-acids, nucleic acids. Bioenergetics. b) Glycolysis and the Krebs cycle, oxidation and reduction, oxidative phosphorylation, energy conservation and release, ATP cycle, cyclic AMP – its structure and role. (c) Hormone classification (steroid and peptide hormones), biosynthesis and functions. (d) Enzymes: types and mechanisms of action. (e) Vitamins and co-enzymes (f) Immunoglobulin and immunity.

Lehninger Principles of Biochemistry by Nelson and Cox is quite popular and covers everything you listed in great detail except for immunology.

I don't really have a recommendation for an immunology book; I think pretty well any of them will cover immunoglobulins (they're pretty integral). My university uses Kuby Immunology by Kindt et al. Molecular Biology of the Cell by Alberts et al. has a couple chapters (some 115 pages) on the subject. As a bonus, it's an amazing reference for cell biology (which you'll need, at least someday, if you're pursuing biochemistry).