This is for the newbies out there.
You first get a set of Aura starter missions. They are easy - and the advice you are given is almost always accurate (one exception that still peeves me - I was asked to fit something I simply don't have the skill - or the skillbook for). Take your time - no rush.
After you finish the Aura missions, do the trivially harder starter missions. Good ISK for a newbie. However, put aside a block of time and do all the missions for a trainer.
On my first two toons - and you get three; I let one expire. On the second toon - I let two expire. You can finish them in quick time; but I am playing eve very sporadially - Do a mission - walk away. Come back & buy stuff then walk away; Sell stuff - and post WoW auctions.
You can probably do several sets of the starter missions in an hour. However, don't leave one hanging part way through while you work on a second. Dont even talk to a second specialist starter if you don't think you have an hour to spend clearing them - save them for later.
That way you get the goodies at the end of the trainer missions.