Writing a demo for linux

Hi there /prog/,  I want to write an opengl demo for Linux using sepples, preferably using SDL or something cross-platformy so it will be easier to port to windows at a later point in time.  Can someone point me to one of those "talk to me like like I'm a 5 year old" resources to help me get opengl working with g++ on Ubuntu. 

Also, I'm used to using emacs for coding sepples on linux, but have mostly just used it for school projects just a few files.  This project will probably be a bit more complex though and cause my feeble mind more headaches without an IDE, so are there any good IDE's out there that work with emacs?

Thanks for the help /prog/

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