No one really knows if now or when is the right time to buy, simply because we really don't know how the markets will move in the future. Personally though, I really dislike buying in ATHs(all-time-highs) and I rarely do buy in ATHs. Though if you personally think it will go up in the future, then go ahead.
Thanks for the advice. I'm still learning and i'm trying to understand the basics. This thing of ATHs seems reasonable

so if u were me right now, with 600 to invest, u just wait a drop in the prices?