The OP is someone that's new in Cryptocurrency and for a start, he's noted the best Cryptocurrency to invest on an is seeking guidelines on how to go about it, I don't think it would be right to start directing him towards the path of trading due to the high risk that comes with it, trading shouldn't even be part of his since it has nothing relating with Bitcoin investment, trading is for people that lacks patient of holding for long-term and are willing to risk it.
Whereas Bitcoin investment is less riskier and with the DCA method and the amount he intended investing monthly I believe he's never too late to start investing and holding for long-term and the good part of it is that it offers features that would help him gain even when price drops so far he's constantly adding to his portfolio for as long as he wants to hodl, probably 4- 10 years and more.
beginners who initially do not know anything about crypto if they want to invest are better directed to invest in Bitcoin. not in trading, although most beginners are more attracted to trading than investing.
actually, it's not a problem when they try the first trade. will feel the difficulty, which I think will not be as easy as I imagined. trading has high risks and it is better to invest in Bitcoin.
the only weakness that beginners definitely feel is the inability to withstand the long term. because it takes an initial understanding of the market and also Bitcoin itself. before starting to invest, prepare yourself as best you can. so as not to be in a panic position and make the wrong decision.