I need help starting a horse under saddle then starting him on roping??

Rascal just turned 2 and I have rode him 1 timewith a saddle and snaffle. 2-4 times with a snaffle. He is very good natured and his mom is ready to go to an areana and try out our hard work on barrels. I really love them both and would like to compete in breakaway roping and barrel racing? If anyone has any tips for me I will greatly appreciate the advice!!!!!!!!