Welcome to the forum!
If you google for it, sites like medium.com seem to have more info than I’ve seen here. Generally mages focus on doing magick and use tarot o oracles as the go-to divination method.
Seem to be a newer “fusion” idea and not too many are into it just yet.
There’s this I notice, maybe that that book - let us know if it works out 
Please do make your Introduction HERE [ ← click me! ], which we need per the forum rules and see our posting guidelines in the FAQ.
Points to cover:
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Do you have any practical experience in magick?
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If so, what exactly do you practice and how long have you practiced?
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Do you follow any specific system or tradition?
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What are your areas of interest?
Here is a getting started with magick guide.
You’ll want to get your spiritual hygiene sorted out, and start work on developing your astral senses.
Then when you can know you have a decent chance at avoiding impostors and parasites then try the first contact guides we have on here.
For reference:
The rules are here - please read them.
The posting guidelines are here in the FAQ
The Terms of Service are here