Welcome to DC, Harrison!
You might find the articles at John Raven's
Traditional Texas Fare site of interest to understand the 3 forms of BBQ. There are other sites with good information, too -
BBQ 101 and
BBQ Basics (some are better than others).
There are several good electric "smokers". Like anything else - you pay for what you get in terms of features like max temperature, temp and smoke control, capacity, etc.
Cabela's website has a good selection to give you an idea of what is available. Here is a
Google list for electric smokers where you can find other options (even instructions for making your own electric smoker from a trash can).
Good luck!