Hi QGIS Community,
I'm Parv, an analytics intern at the Latino Community Credit Union here in 
North Carolina. I'm tasked with finding and using GIS software to visualize 
both US Census data and our membership data at micro levels to determine best 
locations for expansions. As per my instructions, this means being able to:

-          Visualize Hispanic or Latino population by smaller units than zip 
codes.  We have worked with Census tracts in the past and that is ideal, but 
there are even smaller areas with population data, like census blocks.  If we 
can see in a map where the higher number of Latinos live and also see the 
streets so that we can imagine potential locations and draw areas around them, 
we could identify optimal locations.

-          If we get a proposal for a location, for example a realtor contacts 
us and says "I have a great place for rent at 1309 CĂșcuta Dr," we should be 
able to enter the address in the software and define an area around it, draw 
that area and know how many Latinos live there.  The areas could be circles, 
free shape forms, circles cut by major highways or barriers we would think 
people wouldn't cross...

-          Of course we should be able to add our own data to the software, 
like those addresses of our current members, and be able to look at, say, total 
balances of members who live in a defined area.

As we're a non-profit, we prefer Open Source Ware over high cost ware like 
ArcGIS. I have installed QGIS and am currently exploring its capabilities via 
the user guide/training manual. I know I first have to do a join on census csv 
population data and tract or block shapefiles. Assuming I'm able to do that, I 
am trying to find relevant sections that would show me how to do this micro 
level aggregation of population data. I believe in ArcGIS this is called 
"create buffers around a point" but I am not sure if this is the relevant way 
to do it in QGIS or not. I searched for buffers in the training manual but I 
still can't tell if it means the same thing or is relevant for my purposes. I'm 
also going through the vector analysis and processing sections but end up 
getting lost on what's relevant and what's not. I wanted to ask if QGIS was 
indeed the best suited software for this purpose or is there something simpler 
out there I should check out instead.

Sincerely
Parv

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