Hey all!

I live in San Diego, new to REI, and want to find buy and hold properties. All signs so far have lead me to markets outside of California and therefore out of reasonable driving distance. I'm ok with that but wanted to see how people have made this work. I would be hiring a property manager but I'm curious as to how much out of state investors have to rely on them. A few questions for those that buy out of state:

1. Do you visit all of your properties before placing an offer or is this handled by your local agent and/or property manager? I assume you would communicate your strategy with them and rely on them to provide valuable and honest feedback of potential properties in terms of rental desirability and required repairs.

2. How often do you or should you visit your property after it has been acquired? I've heard horror stories of properties that are mis-managed and investors only finding this out by driving by the property. Do you perhaps have someone local (friend/family) that you use to periodically check up on your property?

3. How do you best educate yourself on the market you plan to invest in? Some items I've read about include researching the tenant market (i.e., demographics, occupations, locations of large employers, desired features of rental properties), the housing market (are prices increasing/decreasing, how desireable is the neighborhood), and city/state laws and ordinances. Am I over-thinking it or is there a better approach? 

Thanks guys!