A commonly quoted Wiccan tradition holds that the ideal number of members for a coven is thirteen, though this is not held as a hard-and-fast rule. Indeed, many U.S. covens are far smaller, though the membership may be augmented by unaffiliated Wiccans at "open" rituals. When covens grow beyond their ideal number of members, they often split (or "hive") into multiple covens, yet remain connected as a group. A grouping of multiple covens is known as a grove in many traditions.
Initiation into a Wicca coven: Initiation Into a coven is traditionally preceded by a waiting period of at least a year and a day. A course of study may be set during this period. In some covens a "dedication" ceremony may be performed during this period, some time before the initiation proper, allowing the person to attend certain rituals on a probationary basis. Some solitary Wiccans also choose to study for a year and a day before their self-dedication to the religion.
Solitary Practice: Many Wiccans are more often than not solitary practitioners. Some of these solitary Wiccans do, however, attend gatherings and other community events, but reserve their Spiritual Practices (Sabbats, Esbats, spell-casting, worship, magical work, etc.) for when they are alone. Eclectic Wiccans now significantly outnumber lineaged Wiccans, and their beliefs and practices tend to be much more varied.
Downloadable books (free):
John Alan Halloran - Sumerian LexiconJaroslav Nemec - Witchcraft And Medicine
John Yarker - Arcane Schools
Aj Drew - Wicca Spellcraft For Men
Aj Drew - A Wiccan Bible