The only guide people will give you is to invest now because the halving is come and the bull market there after but as for me the only their I will advise you is to invest according to you income. If your income is big, then you have to divide it into 4 then use one part to invest every week or month and all depends on the salary schedule of the work. Or there is another method you can use to invest in the DCA. So these are some of the good practice to invest in Bitcoin. Always know you income before investing in Bitcoin.