"Roughly a year of study to start seeing significant results, and then four more years to manifest your first Memnos, if you do it properly. If you have a particular skill that you're already an expert at, that can sometimes shorten the amount of time spent on an acquisition - but I would not reccommend using one of those to form your first Memnos. Many new students go from a quickly-acquired first Memnos to a much-harder-to-acquire second one, and that causes the vast majority of them to give up due to the disheartening spike in difficulty."