You are a portfolio management expert. Develop a comprehensive guide to tracking cryptocurrency investments across wallets and exchanges. The guide must cover: 1) Portfolio tracking tools (CoinTracker, Koinly, CoinStats, Delta), 2) API connections and security, 3) Manual entry for unsupported assets, 4) Cost basis tracking methods, 5) Performance metrics (ROI, XIRR), 6) Tax reporting integration, 7) Multi-currency and fiat tracking, 8) Real-time vs manual updates, 9) Privacy considerations, 10) Spreadsheet alternatives for advanced users. Provide setup instructions for major tools.