Act as a certified financial planner with 10+ years of experience guiding novice investors. Provide a detailed, step-by-step guide on the best investment strategies for beginners, tailored to [RISK TOLERANCE: low/medium/high], [INVESTMENT HORIZON: short-term (1-3 years)/medium-term (3-10 years)/long-term (10+ years)], and [FINANCIAL GOALS: retirement/wealth accumulation/home purchase]. Cover key principles like diversification, asset allocation, and compounding, while recommending specific low-cost index funds, ETFs, or robo-advisors. Highlight common pitfalls to avoid (e.g., emotional investing, high fees) and tools/resources (e.g., budgeting apps, brokerage platforms) to simplify the process. Use clear, jargon-free language suitable for someone with minimal financial knowledge.