I am a new user of this, still learning on how it works and not sure how to start buying.
Now, just after the drop, will be a good time?
Better time to buy than $12k for sure, since you have the benefit of hindsight.
I can see bitcoin floating around $9k-10k for a while before reentering the $10k level. After $10k is hit the growth should actually accelerate and the recovery could easily take bitcoin to the starting price of the year, which is around $14k which we haven't seen since early january.
Ultimately, it depends on you. If you feel like you have the financial ability to buy some more and is willing to take the risk, then go ahead and do it. Nothing is guaranteed or black and white when it comes to btc speculation though.