I am looking at understanding how best to learn statistics, management
science in a business and economic setting as a personal study.

This should include online texts/tools, can be supported by cheap
paperbacks and if needed any online courses at a low cost.

The topics to include should be from 

1. Basic Statistics
2. Regression and higher level stuff
3. Modelling including spreadsheet modelling and any softwares or
excel add-ins (Windows and Mac is preferred)
4. management sciences (operations research)
5. Structured equation modelling (any thoughts on that?)

latesly systems thinking is becoming more common. Any directions
towards that would be useful.

Any other stuff which is relevant to business decision making.

Any suggested time frames of study, and other learning guidelines
would be appreciated.

Hi there,

I believe the best solution to your question is the MIT Open Courseware (OCW).

MIT OCW provides users with open access to the syllabi, lecture notes,
course calendars, problem sets and solutions, exams, reading lists,
and some selection of video lectures.  The syllabi typically includes
required textbooks, pace of study, recommended readings, etc.

You can find a list of courses here:
http://ocw.mit.edu/OcwWeb/Global/all-courses.htm
and choose the appropriate course website.

For business and management science courses (includes regression, modeling, etc): 
http://ocw.mit.edu/OcwWeb/Global/all-courses.htm#SloanSchoolofManagement

For economics and relevant statistic courses (specifically 14.30 and onward):
http://ocw.mit.edu/OcwWeb/Global/all-courses.htm#Economics

To brush up on your mathematical background necessary for the higher
level management science and econometrics courses:
http://ocw.mit.edu/OcwWeb/Global/all-courses.htm#Mathematics


Many users contact MIT OCW, asking for information about MIT's
curriculum so they can design their own course of self-study. In the
interest of improving the user experience with MIT OCW materials, the
following guides to MIT's undergraduate and graduate curriculum has
been posted.
http://ocw.mit.edu/OcwWeb/Global/OCWHelp/mitcurriculum.htm


The MIT OCW has continuously been the ultimate source of educational
resources for many people's personal studying (including myself), all
at free of charge.

I hope this helps and please let me know if you require any clarification.

Cheers,
Tox-ga