| Method | Cost | Legality | Safety | | :--- | :--- | :--- | :--- | | | Free (trial) | Legal | Safe | | Used physical copies (eBay, AbeBooks) | $15–40 | Legal | Safe | | Library interlibrary loan (DVD or book) | Free | Legal | Safe | | Howard Berg’s official Udemy course | $10–20 (on sale) | Legal | Safe |