A level maths and further maths

I have already posted this on another thingy, but I was told to post it here so.

I have already posted this on another thingy,
Also, there is a website called examsolutions but they cover edexcel maths, would it be worth for me to learn there anyway as I am sitting the WJEC exam?

When I looked at the detailed proposals from WJEC to reform their maths A level it appeared that the content aligned extremely closely to the reform in England. The pure maths content is very similar to the content of C1-4 but there is more focus on proof and rigorous mathematical working. There is also more focus on problem solving and somewhat less scaffolding of questions so they dont break them into steps that guide you through the question. The applications content of maths A level consists now of defined topics in mechanics and statistics rather than offering candidates a choice of modular options. I dont know enough about the previous WJEC specification to advise whether old mechanics and statistics resources are useful anymore. The major difference from the English reforms is that WJEC have retained the AS/A2 structure where both results count towards your final grade. So yes, using examsolutions resources to learn and practice the content for maths should be helpful. I'd use those for the new 2017 specification. You will also need to use WJEC resources to practice the questions and exam structure you will finally face , every examiner has slight differences in question style and working that you need to get used to. I didn't look at their further maths proposals so can't advise there.

The guidance for teaching document on the WJEC web site provides a useful description of what you need to learn and helpful notes on what is new in the specification.
http://www.wjec.co.uk/qualifications/mathematics/r-mathematics-gce-2017/WJEC%20GCE%20Mathematics%20Guidance%20for%20Teaching.pdf?language_id=1

Yes.

The new spec is basically C1, C2, C3, C4 except some topics changed between how they would be taught (some A2 content in AS content, etc).

So answering your question, yes, it's worth to do those.