Almost everything published about the DGCA papers is second-hand, and a surprising amount of it is wrong. The pages in this cluster each answer one question, and every figure on them is checked against DGCA’s own Civil Aviation Requirements or its Pariksha Flight Crew FAQ before it is published.
If you are starting from zero, read them in the order below. Fees and subjects settle what you are signing up for; validity and attempts settle how long you have; the misconceptions page exists because four of the claims it corrects cost candidates real money.