Good beginner DCA strategy

So I'm newish to bitcoin and I don't make tons of money so I was curious to hear what other people in my situation ($60,000/year) use as there DCA equation. Is it daily, monthly, weekly, etc and what should I try and set aside for it? I was hoping to do $20/day at first but not sure if this is pissing in the wind or a good starting point. I'm very curious to hear other DCA strategies and figures. Thanks