Below are a number of useful fact sheets and videos under the following categories:

Businesses and individuals
GST
Superannuation
Other topics


Businesses and individuals

Self education expenses
PAYG instalments for individuals
ATO general interest charge (GIC)
Non commercial business losses
What is Fringe benefits tax?
PAYG voluntary agreements
Small Business Entity concessions
Carrying on a business of share trading
Guide to small business CGT concessions (2015/16)
Business deductions 
Working holiday makers
Lodging late tax returns
Late lodgement penalties

GST

ATO videos on GST (BAS, record keeping, registration)
GST food guide
GST and motor vehicles
GST – Hire purchase and leasing
GST and insurance

Superannuation

ATO videos on SMSF (setting up, investments, contributions, administration)
Employee vs contractor (ATO video)

Other topics

Wine equalisation tax