Does anyone have advice for effective learning in distracting/suboptimal environments? I know LW recommends textbooks and learning by accumulation instead of random walks, but I have at most 1-2 hours of uninterrupted time per day I can spend learning optimally vs. 8+ hours per day I could potentially use to learn sub-optimally (e.g. frequent distractions, sudden interruptions, hours between learning sessions) during downtime at work that is currently going to waste. Are there better formats than textbooks for these environments or would it be more effective to divide textbook material into sequences of micro-learning sessions? If so, how does one organize and divide this material for effective self-study? If not, are there other ways to effectively spend this time towards incremental self-improvement?