i am starting a new army but not play it yet

so to say im not playing them yet, but im getting them together first. once i do the band wagon saying will be over, like i did with darl eldar still playing them , still finding out what plays, and what not to play heck almost got them painted actually got 3/4 of the army paint . i painted [wyches warriors coven ] rest i geting them painted pro painted

now back to the army im playing [NECRON ARMY] NOW like the hard task of playing a new army like DE
i started painting my barge and i sented to ardvark he like it so paint skeem is gonna be diff

is there any suggestion on what to buy and not to buy from the nec players
so far

barge[lord /dual tuaret]
2 squads of warriors
2 squads of either lychguard or triarch havnt put the arms on yet till play proof
of course i just ordered the overlord/stormlord/and the crazy lord trazyn the infinite

Monolith, wraiths, immortals, flayed ones, c'tan. Build a complete army and then experiment with units to find out what works best for you. Keeps things from getting boring playing the same list every time too. I've put my Necron's away until the dust of the new release settles. Plus, in a couple months, I can pick up models cheap from people who bought them and didn't care for the army.