Looking for a simple definition of what is a marketing plan and what is its purpose?
Confused about the difference between a marketing plan, marketing strategy, marketing mix, and marketing communications plan?
Bottom line: the marketing plan is a written document which describes all the marketing tactics and activities that the business will focus on, usually including a marketing budget and timeline. Often, the marketing plan includes a section on the marketing strategy also. Take a look at a sample marketing plan outline here.

The picture on the right is the simplest way to think about it, starting at the bottom:
It's time to get started by visiting the marketing strategy planning section. Make sure you have your business goals/mission statement in hand.