Planet Bongo Comics is a fan site that has summaries of each issue for the series, but as the comics do not seem to be officially made available online the best option is probably your local comics shop or an online book store like Amazon.
In the back of the comics
The Simpsons comics are produced by Bongo Comics, an American comic book publishing company founded by Matt Groening, the creator of The Simpsons. The comics feature stories and artwork based on the popular animated television series.
You can purchase the latest Simpsons comics online at Amazon and have it shipped directly to your house. If you have a local comic shop you can also find the latest Simpsons comics there.
Futurama comics is published by Bongo comics
Simpsons Comics and Stories was a magazine launched in '93. It was so successful and Matt Groening received so many responses that he decided to make a comic-publishing brand- BONGO Comics! And that is the origin of the best comics in da world!
The "Simpsons Comics" range from $12.00 to $2.99 .
'JMG' is Junk Mail Guy in Simpson's Comics.
millions
Bill Morrison (the editor of simpsons comics) because JMG is sarcastic and spells the right words correctly.
Simpsons comics are still in production so there hasn't been a "last comic" yet.
Read good comics at - http://www.thetopwebcomics.com/
You can read the manga and comics at Zelda Legends, which is linked below.