Soldering station on medium heat and solder roll
Clean the tip of the iron before soldering
Insert parts into the circuit board according to instructions supplied in the kit.
Flip the board over to solder the parts to the board.
Position the iron tip so it touches the board pad and the component lead. Touch the solder in between the part and the iron so the solder flows and attaches the part to the circuit
Clip the leads close to the board. Oops, I slipped. No biggie.
Repeat as necessary to complete your circuit. Remember to clean the iron tip on the sponge regularly.
Check your soldering to insure there is no leads soldered together that should not be! Do not put a clump of solder on the iron to attach the parts to the board. This will cause a cold solder joint.