Welcome to the forum! 
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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 evocation guides we have on here. Enjoy and let know have any questions?
You might like t look into Druidry, and/or Norse magick. Both are revivalist as the historical records are not unbroken, but we know more about the Norse than the Druids. The youtube channels Arith Harger and Freyia Norling are ones I like that have great information from historical to magickal. I also love Survive the Jive for the history though he’s not confined to Nordic peoples only.