Tips for RE Market Research Without Bothering Agents Every Day

[Jason Unrath]

One of my biggest worries as a brand new aspiring investor is that I don't want to develop a reputation for being the annoying guy who asks his agent for comps every day.  Does anyone have any good tips, methods, or resources you can recommend to help me gather my own market research data?  I'd like to (hopefully) be able to find sales data in an effort to find comps for properties, see local market trends, etc.  Thanks.