The double action trigger is going to be your number one impediment to shooting. Look in Grant Cunningham's The Gun Digest Book of the Revolver
for how to manage it. There are two components to be aware of: trigger pull and trigger reset. You need to know both because your second shot's accuracy depends upon it.
Reloading the gun quickly is very important. I use Ayoob's "Stressfire" method because it is fast and reliable.
The difficult part is training. There are fewer and fewer revolver instructors every year. It is essential that you attend training if you want to improve. A regular lesson at the local gun range would help you immensely. I waited three years and went to a trainer out of desperation; I should have done it that first year.