Welcome in the forum, Cathal!
When starting Creator 3.3 you will find an item on the start page "Find Example Project". From here you may select PSoC3 and PWM, ADC example and some more. Combine those solutions to get what you want using cut&paste.
Here is a program you can work on it has the PWM for directions speed controls and UART. It uses an Arduino shield for the motor drive circuit. Check these out at Amazon under motor drive modules. Changes to the code will be necessary as this program was original made for the PSoC 4200.