Open the game folder. open folder "renpy", then folder "common". There should be two "00console" files, one ".rpy" and one ".rpyc". Open the 00console.rpy file with either "notepad" or "wordpad". about 50 lines down, the following lines appear
# If true, the console is enabled despite config.developer being False.
config.console = False
change "False" to "True" (with a capital "T")
save the file. run the game, the console will now open
(i know the comments in the code you just changed says the backtick will open it by default, but I have found "shift-o" works for most Renpy games)
The console runs in something similar to Basic. Use it to change the values of some variables while playing the game, such as money, affection, etc.
So when you get to the "maid" section, to get 500 more dollars quickly
open the console, type "chrisdolares += 500" (without the quotation marks) then hit return
close the console by using the escape key. You now have 500 extra dollars.
