Primary- information that comes directely from the source that is, potential customers. you can compile this information yourself or hire some one else to gather it for you. 

secondary -Also known as desk research, secondary research is the most common research method employed in the industry today. It involves processing data that has already been collected by another party. With this form, researchers will consult previous studies and findings such as reports, press articles and previous market research projects in order to come to a conclusion. The relatively low expense in comparison to primary research is the main advantage of this research as no new research needs to be commissioned. However, its main disadvantage is that the data used in the analysis may be out-dated and therefore return inaccurate results. Furthermore, previous studies may not have targeted the exact issue that the current research requires.

Quantitative- refers to a type of information based in quantities or else quantifable data. (objective properties) as apposed to qualitative information which deals with apparant qualities it may also refer to:

• Quantitative property, a measurable property such as distance, mass, or time or productivity
• Quantitative research, scientific investigation of quantitative properties
• Quantitative verse, a metrical system in poetry
• Statistics, also known as quantitative analysis
• Numerical data, also known as quantitative data

 Qualitative - is a method of inquiry employed in many different academic disciplines, traditionally in the social sciences, but also in market research and further contexts.Qualitative researchers aim to gather an in-depth understanding of human behavior and the reasons  that govern such behavior. The qualitative method investigates the why and how of decision making, not just what, where, when. Hence, smaller but focused samples are more often needed, rather than large samples.