To build a stack in the early stages of a poker tournament, it’s generally effective to play conservatively but with a focus on value. With blinds still low relative to starting stacks, there’s less pressure to accumulate chips quickly, so selective aggression becomes key. Playing strong starting hands, especially in position, allows you to extract value from opponents without risking excessive amounts. Additionally, targeting weaker players who are more likely to overplay hands can help you grow your stack efficiently.