ORIGINAL: Antmf_slith
What is the easiest way to find a units HQ's? I know I can click on them and their HQ lights up but later on in game when I have units all over the place I am having a hard time finding them?
When you select a unit and the unit counter comes up in the right hand box, the unit's immediate HQ is named underneath the name of the unit. That name is a link.
ORIGINAL: Antmf_slithAlso aside from them being close to their HQ do they also need to be close to a rail or as long as its one or the other?
One or the other. HQs, like connected rail, are supply sources. Of course, if the HQ itself is not close to a higher supply source (railhead, port, higher HQ etc), then it won't have many supplies to feed out to its units.
And of course you generally want your HQ close for other reasons. So ideally the HQ s close to the rail and the units are close to the HQ.
ORIGINAL: Antmf_slith
P.S. Can I manually set forth the rail road repair units to repair the lines or do they do it themselves?
...Also when I move and FBD unit on a rail line do I have to manually do anything else? Or does it auto-repair?
The main Rail repair counters on the map need to be manually controlled. You manually move them to a suitable hex to be repaired (usually at the end of a working line) and then in their counter box on the right hand side there is a repair link titled RRC (value usually 3, 1 in the baltic area). Clicking on that link in the counter spends 3MP (or 1 in baltic area) (you have to have 3 (or 1 in baltic area) MP and be on a suitable hex for the link to be active) to repair the rail there to 99% (and the last 1% will repair automatically in the admin phase after your turn). You then move to the next hex, click the repair link again, move to the next hex etc until you don't have enough MP left to either move or repair.
There are also smaller support units of construction and rail repair that you don't really control but appear on the map fixing the rail on their own. Just leave them for the AI. The only way to manipulate them is by suitable positioning of the HQ that they are attached to and sending them 'home' (to their HQ, who then sends them out 'locally' - hence your suitably positioning the HQ - to repair rail during the admin. However these are much slower at repairing rail than the big units and their job is really to infill the side parts of your main lines, unless you are a very highly skilled player - way beyond me!).
You definitely need to read the manual (bits of it at least). Not exhaustively at this stage, but you do need some very basic understandings to play the game without lots of frustration.
This is not a game you can just pick up and play and expect to have any success at.