First think You need to know is Headquarters system.
Press CTRL+F (or ALT+F I don't remember). You'll see a complete list of Your HQs. There's a name, a location of its home base eventually target and always : mode of control.
Choose one at will and press ALT+K, select human full control.
Do it with all HQs. This will prevent AI from messing.
Each HQ has a leader and an air leader - later You may change them, but it's not much important while getting started.
Each HQ has also an main base. Protect it from capturing because Your leader will commit hara kiri or will be captured. Depends of style.
HQ can change its location to a Task Force (TF) or to another base. It costs 5 preparation points (PP). If You have none the action wouldn't be possible. There can be only one HQ located in one base.
Lesson 2
If You have all HQ's under Your control, find some ships and create a TF. Do not choose "auto select".
TF's have various types :
Air Combat - only way to put Carriers at sea.
Surface Combat - only fair way to make Your guns fire.
Bombardment - to punish land troops for living.
Transport - to move troops (eventually supplies or planes)
Replenish - (must have an AO) to fuel Your ships at sea.
and other - less important.
Use "space" key to move between screens if port is full.
Set the destination and the home base (the ships will return there after withdrawing from destination base). Set also a standoff range and eventually the target (for Air Combat TF's).
Set a leader.
more will follow

