Don’t just read it. Take a rate from the book (e.g., 1:2:4 PCC) and try to recalculate it using today's market rates for cement and sand. This will teach you inflation adjustment.
Do you own a copy of Rangwala? Which chapter did you find the most difficult—Rate Analysis or Valuation? Let us know in the comments below. --- Estimating Costing And Valuation By Rangwala Pdf
Rangwala provides specific rules for subtracting volumes for beams, lintels, and openings. Create flashcards for these. (e.g., For openings up to 3 sq. m, no deduction for jambs; for openings above 3 sq. m, deduction for jambs is required.) Don’t just read it