Hi im in year 13 and I do Eduqas A-level French.
We use the AQA A-Level French textbooks for our course and we also read online articles about the topics we're covering too.
I'm not a native speaker and I chose French because it came naturally to me and I haven't found the A-Level that difficult to be honest. The content is similar to GCSE (you have to know GCSE grammar and to some extent the vocabulary because that forms the foundation of the course) and there is some overlap in the topics too (e.g. family relations). There are new grammar points to learn and more vocabulary/different topics and you study them in a bit more depth but it is not so difficult if you have a good foundation at GCSE. Out of all of my subjects, I find French the easiest to get a good grade in; if you keep up with the vocabulary and grammar then it's not hard to stay on track.
I wouldn't say that the grade boundaries are awfully high. Most of the people in my class have been predicted A*s and got those in our mocks last year. The format/difficulty of the exams is quite similar to GCSE and the listening/translation is not that much harder. The writing may seem difficult as you're writing essays in French on a film/book but with practice it's not that hard. The speaking exam is longer but if you have regular practice speaking on the cards then it really isn't that much different to GCSE.
Hope this helps.