Act as a seasoned language coach with 10+ years of experience teaching [TARGET_LANGUAGE] to learners of all levels. Provide a step-by-step guide on how to set realistic and measurable milestones for a [BEGINNER/INTERMEDIATE/ADVANCED] learner aiming to achieve [SPECIFIC_GOAL, e.g., 'hold a 15-minute conversation' or 'pass the B1 exam'] within [TIMEFRAME, e.g., 3 months]. Include tips on breaking down larger goals into smaller, actionable tasks, tracking progress, and adjusting milestones based on the learner's pace. Also, recommend tools or resources like [APPS/TEXTBOOKS/COMMUNITY_GROUPS] to support their journey.