You really should read the manual and learn the combined keyboard and mouse user interface.
You can place location markers on the timeline in the arrangement and assign single keypress controls to any of them. As you normally start playing the project with the space bar, mapping different markers to the keys Q-R (for example) gives you instant jump control into different important parts of your project. Think about it: the thumb of your left hand on the space bar, and the other fingers resting naturally on Q-R.
After that it will soon grow to be an instant reflex when you want to start playing at an exact location. I usually keep Q always at the start of the project, and move W-R (and onwards) according to important sections in the arrangement while I'm editing. "Let's hear it from... there" --> instantly pressing key and space bar, in a fraction of a second. Combined with the fact that you can indeed set the playing position with one mouseclick, and also zoom any time into any exact location in the project with just one click and a drag, you have practically instant control over the arrangement at all times.