Hello, I am new to this forum. I'm sorry in advance if this is the wrong place to post. I am doing a 2nd year math course where I learn about ordinary differential equations and vector calculus. Quick overview of learning objectives for this course can be found here http://studyat.anu.edu.au/courses/MATH2405;details.html) My background is that I am a 1st year math/physics undergrad student, last year I took a gap year, so I graduated high school in 2010 but haven't taken a math class since 2009. The math that I have learnt up to is basically a standard high school math education (Full syllabus can be found here for those that want to compare with the MATH2405 http://www.cie.org.uk/qualifications/academic/uppersec/alevel/subject?assdef_id=756) What do I need to know in order to do well in MATH2405? My other courses are relatively easy, so I can spend most of my time on this. I was told to look at 18.01 (Single Variable Calculus), 18.02 (Multivariable Calculus) and 18.06 (Linear Algebra) from the MIT OCW lectures, but I was wondering if there were other/better resources that would also be useful. Also, I feel like I gain confidence by spamming problems (and confirming that I get them correct). Are there any places where there are a lot of math problems with answers? Thanks in advance.