Kinda depends really, I manage fine checking once or twice a day (not a day trader). But there is a ton of information to consume and you should defintely take your time for that.
So like 1-2 maybe 3 hours a day in one go or spread out. If you're new it's best to start small and try to learn the most you can first before going big, get a bit understanding on what works for you, how you can manage the time efficiently. First time checking out an ICo it probably took me about 2 hours to really consume all the info now I do it in 30 minutes or less. Because I know what to look for, where to look and have more understanding of the envoirment so I don't have to research every little thing.