How do you obtain a net yield of ATP from the catabolism of glucose?

through respiration which involve series of process. glycolysis, link reaction , krebs cycle and ETS.

a. Per glucose, four ATP are formed by substrate-level phosphorylation, two during glycolysis and two during two turns of Krebs cycle.
b. Per glucose, ten NADH and two FADH2 take electrons to the electron transport system.
c. For each NADH formed inside the mitochondria by Krebs cycle, three ATP result; for each FADH2, only two ATP are produced.

Remember two ATP are ised up at the start of glycolysis.

The fermentative phase of glucose catabolism (glycolysis) involves several enzymes; the action of each is summarized below. In living cells many of the compounds that take part in metabolism exist as negatively charged moieties, or anions, and are named as such in most of this article; e.g., pyruvate, oxaloacetate.

In order to obtain a net yield of ATP from the catabolism of glucose, it is first necessary to invest ATP. During step [1] the alcohol group at position 6 of the glucose molecule readily reacts with the terminal phosphate group of ATP, forming glucose 6-phosphate and ADP. For convenience, the phosphoryl group (PO32-) is represented by ?. Because the decrease in free energy is so large, this reaction is virtually irreversible under physiological conditions.