Below you will find information about Astaroth and hopefully it will help you to summon this demon.
Demon Astaroth: Pseudomonarchia Daemonum
Astaroth is a duke and he appears in the form of an angel. Astaroth answers truly about issues of the present, past, and to come, and also of all secrets.
He makes a man wonderfully learned in the liberal sciences. Astaroth rules 40 legions of spirits.
Source: Johann Weyer, Pseudomonarchia Daemonum
Demon Astaroth: Goetia & Daemonolatry Goetia
Duke Astaroth rules 40 legions of Spirits. He gives true answers of things you want to know about the past, present and future. This Spirit can reveal all secrets to you and will make you very knowing in all sciences.
The above stated and also a Daemon of love and friendship according to S. Connolly.
Source: Goetia & Daemonolatry Goetia by S. Connolly
Demon Astaroth: my magick
I have done magick with demon Astaroth and this demon is a teacher in the area of magick. If you want to delve into the magick of Golden Dawn and then also study planetary magick, Astaroth will teach you.
Astaroth will guide you deeper and deeper into the studies of Kabbalah. This demon enjoys the company of Bune and he can be summoned with the spirits of the dead for divination.
Astaroth can be summoned together with Lucifer and Beelzebub (Beelzebuth). All three demons will push you into active action to live your inspired destiny.
I have two videos for you. One video is about a Tarot spell with Astaroth and the second one is about necromantic Tarot magick with Bune.
You can also summon Bune together with Astaroth and the dead, because both Bune and Astaroth are ranked as Dukes and come from the same place on the Qliphotic Tree.
All my free articles and videos on the subject of magick are available. Here is My blog.