SMD soldering exercise boards are an ideal way to practise your soldering skills before commencing your prototype build, on your expensive practice board.
SMD stands for surface mount, indicating that they feature different components that you solder onto the surface of your circuit board, as appose to through hole.
By using an exercise board, you can try out various soldering techniques, with different components and tips. Some exercise boards have test points to make sure you have soldered the circuit correctly, as sometimes they look like they have been soldered correctly but they are not.
The soldering boards are a small investment for a lot of benefit and are available in different package sizes, as well as single-sided or double-sided depending on your space constraints.