If you're undergoing a new build or renovation, talk to your builder as soon as possible as the cheapest and easiest method is for your electrician to wire up speakers while doing other electrical work.
If you're planning to DIY, this should be a relatively painless process. There are no specialised certifications needed for wiring speaker wire. The easiest way to install the cables is by running them through the attic and down the wall to your amplifier. It may take more wire, but it requires less skill. The first step is to plan out where everything will be located. The plan should include distances, studs, and any impediment. While buying in-ceiling speaker wire, allow 20% extra in case something comes up and add 1-2 meters at at the end so you can set your speaker on a ladder while installing.