I will provide encouragement for you to do so by including a question in the exams from each chapter concerning material not specifically covered in lecture. Carbon can form four covalent bonds , and when those are all occupied with hydrogens we have hydrocarbons , the stuff of natural gas and gasoline.
Sugars are hydrocarbons with hydroxyl groups replacing at least one of the hydrogens on each carbon.
Fatty acids are hydrocarbons of about 20 carbons with a carboxyl group at one end. Unsaturated fatty acids have one or more double bond between some of the carbons. Triglycerides are combinations of three fatty acids, usually with glycerol as the backbone connecting them together. Weird lipids like cholesterol have ring structures and form the steroid hormones . Amino acids are carbons with a hydrogen, amino, and carboxyl groups, and a variable group.