Amongst other things you will find A-level notes on algebra and trig as well as 1st year undergrad notes on calculus (a complete 1st year course) and
differential equations (1st order, 2nd order, Laplace transforms, systems of DEs, series solution to DEs, higgher order DEs, BVPs and Fouriers series, and introduction to PDEs).
This is Walter Lewin's MIT video course, "8.02x: Physics II: Electricity and Magnetism", which is no longer on the MITopencourseware website, but can still be found on youtube.
This is such a good course I decided to include it here. If and when I get into more physic I'll create a separate webpage for this.
This is a short course on the concepts of linear algebra. Its content focuses on a 1st course in linear algebra, but instead of doing any of the "algebra" of
linear algebra, the author presents the conceptual aspects of the topic, with the help of graphics and animations at every stage.
An excellent set of animations relating to maths and physics topics. Also check out his other website.