I think it depends on what you like about makeup. If you're into colors, go for the eyeshadows. I'm new to MAC myself and that's what I focus on; I have pretty good skin so I don't use a lot of foundation, so when I do, I just use cheaper brands. With eyeshadows, there's so many choices, of course, so sometimes it's a lot of work to figure out what you want. The nice thing is different color families have a lot of choices within them! I recommend starting with a few of the Veluxe Pearl finish for shimmer (which are very soft and wearable - not overly sparkly - but still very shimmery) and some Matte2s and Velvets (plush and very subtle pearl, if any) for less shimmery looks (regular old Mattes are okay, but I am in LOVE with the color payoff and finish of the Matte2s).
Are you a gloss or a lipstick girl? Sheer or opaque? If you like gloss, but like it less sticky, try Lustreglasses or Tinted Lip Conditioners - that's what I go for because Lipglass is very sticky and hard for me to tolerate. The regular lipsticks vary in finish, and I haven't tried any yet, because I am in love with Slimshines, which are shiny and moisturizing on the lips, and not too intensely colored; even the darker and redder shades are just the tiniest bit sheer, which I really like.
Good luck and have fun!