What are all the different sectors of Marketing and what do they entail?

[WiseWisher]

I'm curious as to where to focus my studies, dependent upon what area I find most interesting.

[Andrew O]

Advertising
Ad Tracking
Advertising Research
Article marketing
Borderless Selling
Brand
Branded content
Cause marketing
The Chartered Institute of Marketing
Claude C. Hopkins
Coolhunting
Copy testing
Customer Engagement
Engagement marketing
Evangelism marketing
Global Marketing
Guerrilla marketing
Integrated Marketing Communications
Internet marketing
Marketeer
Marketing collateral
Marketing co-operation
Mass customization
Master of Marketing Research
Merchandising
Mobile Marketing
Multichannel Marketing
One Source Multi Use
Permission marketing
Predictive analytics
Digital marketing
Reality marketing
Sales techniques
Search engine marketing
Service-dominant logic of marketing
Services
Social marketing
Sports marketing
Upsell
Viral marketing