Hi Finnegan, welcome to the site!
I suggest you read through the rulebook, particularly the descriptions of the different units, and look at the pictures in the middle and see what you like best. There is almost nothing in the LM army that is never worth taking, everything is well balanced and useful. Jungle swarms and razordons being the two exceptions, though lots of people still use razordons.
There are several main types of LM army; saurus heavy and/or carnosaur, skink heavy and magic heavy. Think about what type of list you want to bring.
The battleforce is not a bad start if you want to grab some models and start playing around with them; you can use the Temple Guard revered guardian as a scar vet hero and have a small army to play with.