Simple "Path" Animation

Start Blender.
Add new "Curve" by using "Shift" + "a" key

Go to wire-frame view mode
(So that you can see the added curve clearly.

Select the "Curve" by right clicking.
Go to edit mode using "TAB" keu.
Adjust the curve points & handles using right click to select
and "g" key to move it around.

Choose the object to animate using right click.
Go to object constraint panel.
Add constraint & choose "Follow Path"

Choose target as your curve & enable "Follow Curve"

Go to start frame (eg: frame 1).
Select the curve.
Go to "Object Data" panel
Move mouse over evaluation time.
Press "i" key to insert frame.

Go to end frame (eg: 250)
Key in the end Frames (eg: 250)
Key in "Evaluation Time" (eg: 250)
Move mouse over "Evaluation Time".
Insert the key frame again using "i" key.
Done! Press "alt" + "a" to preview animation.

Simple Animation

Start a Blender!

Select object to animate by "Right Click"

Go to the first frame. Move object to any start position (use "g" key)
then, press "i" key. Select "Location"

Drag to any end frame of your choice (eg: 100).

Move object to desired new location then, press "i" key again
and choose "Location"

Done! Press "Alt" + "a" to preview/run the animation!

Simple AI [Collision Avoidance]

Adding more text soon...