Update README.md

README.md

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 # Applying to labs at R1 universities
-This will be a webpage that helps people apply to labs
+So, you want to be a PhD student or a postdoc at an R1 university. Let us quickly review why.
+
+## Why to apply to labs at R1 universities in the US or Europe
+They tend to be well-resourced and do some cool research. They also tend to be great places for networking.
+
+## Why not to apply to such labs
+The labs tend to focus on papers and grants. They tend to be less good at teaching than a lot of other places.
+
+