First of all, WELCOME aboard! Not sure what your style of crappie fishing you do? Also, not sure of the water conditions where you are; such as clarity, depths, vegetation, brush, structure, etc.. So it is difficult to make suggestions to you for the water you fish, without knowing what that is.
There are basically 4 styles of plastics that I believe most crappie anglers will have in their arsenal. There is the curly tailed grub, the straight tails, paddle tails and tubes. Each has their own time & place and you need a selection of each to try out when conditions get tough.
Then there are jig heads, the most popular sizes are 1/32 oz., 1/16 oz. & 1/8 oz., which will cover most conditions you will face. Colors of both the plastics and the jig heads vary in popularity, again, dependent on conditions. My preference leans toward the plain, unpainted heads, but others here may disagree. I've never had a problem getting a bite with plain lead. They work for me!
Makes sure you have some chartreuse plastic bodies for these jig heads, along with mixes of chartreuse/black or blue two tones. Pink is also a primary carry (for me anyway); the most popular probably being electric chicken. And as you get further into the sport, I'm sure your arsenal will grow and grow. Hope these suggestions get you going anyway. We'll be looking forward to seeing some of your posts soon - the ice will be gone before you know it.