The Knight of Pentacles indicates that you have the motivation and the will to get involved and acquire new knowledge with a view to improving your job position. The card also represents your ability to manage your resources, both material and intellectual, to achieve your goals.
The reversed Ace of Wands highlights that there is something you are overlooking in your pursuit of the knowledge you need to progress in your work. Perhaps you are neglecting a certain aspect or not dedicating enough time to study.
The Three of Cups suggests that you are ready to take some risks and face the difficulties that may come with a change in your career. Furthermore, this card also indicates that outside help is vital to your growth and that you must be ready to ask for help from others when needed.
In conclusion, the three cards indicate that you are ready to do whatever it takes to improve your work situation by learning new skills. However, you need to pay close attention to any overlooked aspects and don't forget to ask for help when it's needed. The answer to the question is therefore yes: yes, you can acquire new knowledge to improve your job position.