1) Nobody knows the day when S3 will come out. Some days/weeks ago there were some progress reports and posts by devs. They announced some updates like new Westhill track, so it seems something
2) Take a look at calender: https://www.lfsforum.net/calendar.php
(not complete list, but good start)
This should explain everything: http://en.lfsmanual.net/wiki/League_Racing_Guide
(if not then ask
From upcoming events the most suited for starting out is probally fox friday
https://www.lfsforum.net/calen ... 14-8-1&e=1920&c=2
There you can just arrive & drive relaxed.
Some of the other races in next days are maybe bit tricky for start, especially if you did not practice the track yet.
For example GTI trophy
: big grids=easy to cause crashs.
LFS Grand Prix
is even announced as "Most Difficult Car & Most Unforgiving Track"
But of course I don't know how fast/good you are
Maybe bookmark http://www.absolute-beginners.nl
too. The league just went into summerbreak last weekend but continues 31 August. (Possible that during summerbreak there might be some just-for-fun races)