You ask for directions to study Chassidus, prayer, and necessary preparations.

For specific study, consult the elder Chassidim, especially the Mashpia of Chassidus. The necessary introduction is "naseh v'nishma." There is special opposition from the Yetzer Hara against Chassidus, but we have the power to overcome it. Use the mikvah and say Chitas. https://www.torahrecordings.com/rebbe/igroskodesh/011/009/3550