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The Julia language organization maintains an open, free forum where you can post questions to the helpful users under the New to Julia category. Especially if your question involves advanced scientific capabilities of the language, such as tensors, it will be invaluable.
On the other hand …
If you are an "ordinary" newcomer, whose interest is not in "learning Julia" but in replacing Excel and other software with more capable tools you may be better off looking here for guidance.