The advertisements ask for volunteers to get in touch via e-mail with details about their own experience and proposed targets, and were posted on a variety of jihadist forums, including Al-Fidaa, Shmoukh al-Islam and Honein.
"The aim of this training is to continue with our brothers who are seeking to carry out operations that make for great killing and slaughtering of the enemies of Islam," the advertisement attributed to Yemen-based al-Qaeda in the Arabian Peninsula was quoted by the Daily Mail as saying.
"It is clear now that the individual jihad, or what is called the lone wolf, has become more widespread and its features have started showing , in summary, it is a complete jihadist operation to be carried out by a single bomber," the ad said.
The ad said that the targets of the attacks were "those who are fighting the Muslims and Islam" and specifically pointed to "economic, military and media interests of the enemy."
"Their identity must be, according to priority, American, Israeli, French and British," the ad said of the volunteers.
Al-Qaeda and its regional offshoots often use jihadist Internet forums to post statements claiming responsibility for attacks, and to communicate with followers.
A number of top al-Qaeda leaders have been killed in the US drone strikes recently.
On Monday al-Qaeda's second-in-command Abu Yahya al-Libi was killed in a CIA drone strike in Pakistan.
Al-Libi was targeted in a pre-dawn US drone strike in North Waziristan, a Taliban and al-Qaeda stronghold along the Afghan border.
