It is a test-based learning resource for IELTS preparation, consisting of strategies for 4 skills: Listening, Reading, Writing and Speaking. It comes with approximately 2,500 questions, and a range of different activities. You can practice as often as you wish.
Everyone has their own learning style preference.
Some individuals like to learn by reading while others like to learn by watching. Moreover, you can do this by reading the Online Tips and Practice guidelines, and watching the videos accompanied in Strategies Pack.
Nevertheless, whatever the learning preference, the most effective way of learning something is through PRACTICE.