I've seen a lot of new players recently with lists that are very diverse in ships and abilities and i think this is the reason a lot of new players dont get to grips with the game as quickly.
I always advocate that until you're *really* familiar with a ship, EPT or talent that its far better to take a list where the ships are largely the same.
For example, two royal guard TIEs with PTL and shield upgrades led by Soontir fell with PTL
I know it sounds obvious but knowing that *every* ship can pull the same manouvre or has largely the same talents stops you putting yourself in a position where your while battle plan falls down because you've moved the A wing that DOESN'T have PTL into a position where it really needs to boost AND evade this turn (thinking it was the other one)... you have to choose one and either end up getting hit by shots you could have avoided or not in a poisiton to fire at what you wanted to.
Its very tempting when you start playing to want to field a bit of everything but i've lost count of the amount of times i've seen a player go 'arggh... i've just realised that ship that got destroyed could have passed the damage on with 'draw their fire'' etc.
I think the crux of the advice is dont try too much too soon.
Even though i've been playing for a good while now i still stick to this theory
Most my 'flights' are of the same ship and never more than three different types as i helps me keep track of what i can and cant do, makes my turn play faster and helps me anticipate exactly where i can go.
When i include different unique pilots or abilities it really slows my game down as i really try and make sure i scan each pilots card and upgrades before making my move or chosing an action as i've learn the hard way that rushing makes me forget something critical i can do.
A second part of this advice, and this is really for the newer player is to built a list around one tactic or element of the game. So your interceptor list is about excelling in manouvre, your ion cannon Y wing list is about controlling the enemies manouvre.
If you make your list excell at one thing then you WILL come unstuck if you get an opponent who is unphased by this tactic but in the long term you'll really learn to master that game element.
if you dive in with a manouvreale A wing, an ion controlling Y wing and two weak naked Z95s (which you really want to learn to use in swarms) you wont really get your head around that ships strenghts as quickly as you do when your list relies on it.
To many of you on here this is obvious advice but i hope it helps some new players.