You can learn better with a handmade vision, or maybe you want to learn books, or online. You need to install the best method for your chosen computer course. Maybe you will pay for completing your course, or maybe this was paid by your company. If you choose a diploma in computing Singapore, you should get all those skills which you really need to do your job, if your company repays.
The cheapest probably the best value for a long time course is not available. It is also believed that long courses, more training and more information will go well in the real world, and will be well suited for your needs. Passing the exam and getting more qualifications.