As a homeschooler, I use Conquermaths as my main way of learning maths and I must say that it has been very helpful. Conquermaths must be the best mathematics-teaching website out there. The lessons are well organized and one of the best things about it is that if you find you are unable to follow a particular lesson (say on algebra in KS4 level) you can go back a year and watch the more basic lessons on algebra in KS3. The lessons are very well explained and thoroughly explain the topic they cover. The worksheets are also well designed, but there are a few problems I found with them, one being that there are glitches in some of the worksheets ( I found that even though I was entering the correct answers - from the answer sheet - into the boxes, it would mark them as wrong) Overall, though, Conquermaths is excellent. I would definitely recommend it to others, especially homeschoolers who don't rely on teachers for maths