Where do I buy Ordinals?

I'm curious about investing in Ordinals, but I'm not sure where to start. Could you please elaborate on the various options available for purchasing Ordinals? Are there specific exchanges or platforms that cater specifically to these digital assets? Additionally, is there a recommended approach or best practices I should be aware of before making my first purchase? I'd appreciate any insights you can provide on this matter, as I'm eager to enter the world of Ordinal investments.