What features are included with least expensive MacBook?

The least expensive MacBook has all of the features of a regular MacBook, but only comes with an i3 processor. This means the computer will run a bit slower than a more expensive MacBook. If you don't get a MacBook Pro, you will not have access to any "pro" versions of the applications such as QuickTime. You will have to buy those separately :)

As far as I know, the only MackBooks available to the general public are the Air, the Pro, and the Pro with Retina. All models come with either an i5 or an 17 processor, and either 4GB of RAM or 8GB of RAM. The major differences between all models boils down to storage and graphics cards. The Airs have Solid State drives in 64GB or 128 GB for the 11" model to 128GB or 256GB for the 13". The MacBook Pro gets a serious graphics card (for CAD, 3D design, hard-core gaming) in the 15" model. If an advanced graphics card is what you're after, I suggest going for the 15" Pro with the 8 gigs of RAM and the 750 gig hard drive.