Yeah, it's missing the 4th (and 5th) argument to the draw rectangle function, I forgot to include them. You should be able to fix this yourself Check your original calls to those functions.

Alright, let's do some pointers then to get you on your way :) Number 1 can be ignored. It's going to be solved automatically when you do number 2 :) For number 2; if you want multiple of anything, you need to create a table to store them in. So you'll have to make a table that stores (for now) coor...

The one thing I really miss is that Mozilla addon that hides websites I don't like when using Google search.

This sounds intriguing. Tell me more?

What would you want to do with that information? The total amount of memory on a system is used by lots of things, and you have no idea what other processes are using (or are going to use) chunks of it, so the amount of available memory can't really be determined.

That looks like a pretty cool search engine I'm going to use that for a while, see how well it works.

Snackrilege, that's not an easy subject at all unfortunately :( I found this tutorial which explains it pretty well, however the code samples are in some form of C (because it's explaining box2d, the system behind love.physics) I think it'll help you understand what's going on. If you have more ques...

Keep in mind that using getPixel constantly is probably (a lot) slower than pulling the whole image into a lua-table and accessing that.

No worries, that's always how it begins

Soon you'll be knee-deep in a project and you'll have to do everything yourself, so enjoy the available solutions while they last!

You're looking for Sensor Fixtures:
http://love2d.org/wiki/Fixture:setSensor

Aren't these basically just table.insert, table.remove and the == operator? You can't get much shorter than the built-in functions.