Hoodoo is a traditional African American folk magic and spiritual practice that developed in the Southern United States. It is a unique blend of African, Native American, and European folk traditions, rituals, and beliefs. Hoodoo is also sometimes referred to as "conjure" or "rootwork."

Key aspects of Hoodoo include:

1. **Herbology:** The use of herbs, roots, and plants is central to Hoodoo. Practitioners believe that various herbs and roots have magical properties that can be harnessed for healing, protection, divination, and other purposes.

2. **Candle Magic:** Hoodoo often involves the use of candles, which are dressed with oils and herbs and then burned in rituals for specific intentions, such as love, luck, or protection.

3. **Amulets and Talismans:** The creation and use of roots, talismans, mojo bags, and other objects imbued with spiritual power are common in Hoodoo.

4. **Rootwork:** Hoodoo practitioners perform various spells using scripture from the Bible to achieve their goals, whether they be related to love, money, health, uncrossing  or protection. 

5. **Divination:** Hoodoo incorporates divination practices such as reading tarot cards, bone throwing, scrying or other objects to gain insights or make decisions.

6. **Ancestral Worship:** Many Hoodoo practitioners honor and work with their ancestors, seeking guidance and protection from them.

7. **Crossroads:** Crossroads are considered places of magical power in Hoodoo, and they are often used as ritual places in rootwork. 

It's important to note that Hoodoo is a closed practice and varies  from person to person. Hoodoo is passed down through generations primarily within African American communities and has evolved over time.

Hoodoo is not a religion but a magical and folkloric tradition. Some practitioners may incorporate Hoodoo practices into their religious beliefs, while others may approach it as a standalone magical system. It's a rich and culturally significant tradition that continues to be practiced today.