Many students can pass the QTS Skills Test on their own.
If you're short on time, anxious about Maths or want to build your confidence, I recommend you get an expert tutor. I've been teaching for 7 years and I'd love to help out. Be sure to choose a tutor with lots of experience.
20 online practice tests. Great to have extra practice. I've been told by my students that the video explanations of how to complete the tests are not clearly explained.
There are some great videos on Youtube. Here is an excellent one to get you started
This is the best book. Plenty of practice questions. There are many books on the market and I don't recommend you get them.