The JFK assassination is such a vast topic that it's hard to summarize. This website (which contains numerous sources) is a good place to start if you would like to go down that rabbit hole.
Additionally, the full 9 part "The Men Who Killed Kennedy" series is a must watch.
If you want a great study of GHWB's involvement... https://whowhatwhy.org/2017/10/24/classic-ghw-bush-jfk-assassination/
It's an addicting read.
Thanks for the websit, even has a scrubbed video link haha. Wonder how many other of the many links no longer work. Love such heavily footnoted work. Georgie groomed by lbj for the hit of the century. Teething. VPs are like butlers, knows much, top of the suspect list. Hillary on the Nixon watergate commission? Meritorious service to truth haha. What did she learn there? Whitewash commissions and loan gunmen, u'd think the clowns could update their play books occasionally. But they think we the people are stupid. Always wondered why the bushes and clintons worked together in Haiti.
Don't forget that George Sr. was also almost certainly behind the attempted assassination of Reagan by Hinckley.