Sessions

name can be a variable, a Constant, (an @instance variable, a @@class variable, $global) http://rubylearning.com/satishtalim/ruby_names.html

adding numbers string interpolation

(methods puts)

sinatra: returns last expression in the block to the web browser, url matching, getting param from url, string interpolation deploying?

SESSION2

conditionals sinatra templates? (only showing values) form submissions? (with validations?) - example of a function?? FOAAS ?? / text-based game

SESSION3

collections & iterating providing the contents of a file? similar to sinatra3?

SESSION4

hashes - explaining params, building an api?