How to work properly with hammer drills

There are so many different types of drills and drivers on the market today that it can be confusing to match the right one for a particular job.
Hammer drills are similar in design to the drill drivers but feature an additional mechanism that drives drill bitsforward with a pulsing hammer-like action as key rotate. This hammer effect is necessary for projects that require drilling into brik, block, concrete or any other masonry surface.