I need to learn mathematics!

I'm a 25 year old who just started an advanced diploma in engineering technology (civil). I have not done mathematics since I finished high school.

I've just finished week two and have available to me all the topics that we will be touching on for mathematics. We'll, it's a lot. Obviously. The course guide stated that no prerequisites were required but by now I've judged that having a good foundation would've helped out immensely. The teacher presents the information in a way that is nothing like high school was. She gives a sheet and expects us to work in groups and approach her if we have any trouble. No going through rules/laws etc. At best, maybe a worked example on the board but each question present a new hurdle.

I'm trying to self teach myself and use a learning resource that is provided by the university where experienced students help struggling students with their work. It's helped greatly but I find I need to learn mathematics in a way that was presented in high school.

Some of thetopics I need to learn are:

algebraic operations

number systems/unit conversions/real numbers

straight line graphs

Cartesian and polar coordinates

quadratic equations

geometry

trigonometry

basic statistics

What are the best resources to learn these topics? Books, websites, anything.