TERTIARY STUDENTS, being either young adults or mature adults, seek nonjuvenile means of learning and revision, and yet still have a bit of fun. Hence these MATHS CONTENT GUIDES or WORKSHEETS are
You are wished great success in your studies; feedback on the Guides is most welcome.
Number: there are to be over 20 Guides, from Fractions, Decimals, Percentages thru Logs to Significant Figures.
There is one basic but important Guide within this topic, on Present and Future Values.
Calculus has about 10 Guides. These are Basics, The Rules, Lagrangians thru to Second Order Differentials.
Geometry: Basic Geometry and Measurement meet most students’ needs; another Guide, on Trigonometry, can take a student on many paths that only a small proportion of students may need.
Matrices concentrates on the various methods of inversion.
Some really useful free or cheap websites with our quick review, which we also recommend.

ttp://patrickjmt.com/ 
http://mathtv.com/ 

http://brightstorm.com/math/ 

http://khanacademy.org/ This site has hundreds of free videos, from basic maths to tertiary/masters topics maths, averaging about 10 minutes each. The lessons are a voice narration and a coloured pen on a black background they may be more suitable for revision. 

http://www.yaymath.org/ 

https://www.youtube.com/user/ArtofProblemSolving 

http://www.thefutureschannel.com/ This site has a huge variety of STEM (science, tech, maths and engineering) videos, with an emphasis on “Maths for the Real World”. It requires a bit of effort to find what you want, with no search facility yet (Aug 2015) 

http://wolframalpha.com/ 

http://www.mathtutor.ac.uk/ 

http://www.cf.ac.uk/mathssupport/ 

http://www.mathisfun.com/ 

http://mathvids.com/ 

http://mymath.co.uk/ 

http://nrich.maths.org/frontpage 

https://www.dlsweb.rmit.edu.au/lsu/content/c_set/nursing/nursingcalculations.html 

https://emedia.rmit.edu.au/learninglab/content/maths 