This tutorial gives an entertaining overview of many of the features found in Arcana Heart 3's combat system, with examples that actually show how to use them.
iFixit chose to "showcase the roots of today's game consoles" by taking apart five systems from the 70s, 80s, and 90s. The consoles chosen for teardown include the Odyssey 100, the RCA Studio II, the Atari 2600, the Famicom, and the Virtual Boy.
iPLAYWINNER's primer covers the series' origins, American scene, and basic gameplay mechanics and also includes lots of useful links. It was written by gamers who are fairly knowledgeable about the series, so give it a look if you've ever wanted to learn more about Melty Blood.