No. JWs don't know what bible study is. JWs study Watchtower publications which selectively quote and cite individual bible verses out of context to support Watchtower teachings. The bible is not the focus of their study. The publications are. They merely use (and abuse) the bible to validate the teachings of their organization.
JWs have a finite collection of bible verses that they are familiar with and that they cite and quote over and over again to support key Watchtower teachings. The rest of the bible is largely unknown to them. They are familiar with just enough of the bible to support Watchtower's teachings.
Once Watchtower has gotten hold of their minds, any reading of the bible by JWs is then done, not with an honest, open mind, but with a closed mind having Watchtower blinders on. JWs profess to regard the bible as the final authority on doctrine. But the reality of their actions reveal that it is actually Watchtower - "the Society" or "the Organization".
Show a JW any clear passage of scripture that contradicts a Watchtower teaching and see what the JW will do. He will not accept what the scripture is plainly saying and acknowledge that Watchtower is wrong. No. Instead he will say to himself: "What does the society say about this scripture? Let me check the Watchtower Library and see..." And the JW will accept whatever explanation Watchtower gives, however twisted, however disingenuous, however illogical as being the truth about what the scripture actually means, and he will ignore what the scripture actually very plainly says.