Training help!

As you can probably guess by the title I want to do a triathlon, specifically an Ironman 70.3, but have no experience whatsoever.

I can run, not fast and probably not the best form. I can’t swim one lap in a pool without stopping, and I don’t even own a bike.

This has been a dream for a long time and my goal is to complete a 70.3 in late 2027.

Any assistance is greatly appreciated.