Precomping in After effects:

EASE IN /EASE OUT / EASE-EASE

Temporal keyframes & Spacial keyframes

Roving Keyframes:

http://greyscalegorilla.com/blog/tutorials/guide-to-keyframes-in-after-effects/

Copy – Paste Keyframes:

Orient to Path ( ’11:20 ):

Roller coaster animation:

Keyframing tutorials:

http://cgi.tutsplus.com/tutorials/keyframing-tips-for-adding-weight-to-basic-shapes–ae-23969

Basic training:

http://cgi.tutsplus.com/tutorials/after-effects-for-beginners-effects-animation–ae-206