Pick your desired wood. Plywood is a good choice for your cabinet frame, melamine (Image 1) is a durable and inexpensive material for the sides and maple is a good choice for the doors.
Cabinets are a challenging project for anyone, so pre-measure your space carefully and consider making blueprints to help guide your design (Image 2).
First build your cabinet frame to size (Image 1), attaching with wood glue and a nail gun.
Using a table saw, cut dados into your cabinet sides. This will give your sides a tight fit.
Fit the sides together and use wood glue and a finish nailer to secure (Image 2). Use a framing square to ensure that the cabinet structures are square.