Possible disease/pests?

[simmsgre]

Hello,
I have finally taken the plunge and started indeterminate beefsteak heirloom tomatoes from seed and transplanted them into containers. So far they are looking great and have been monitoring the soil moisture with a meter and used tomato fertilizer and earthworm castings when i transplanted them. There are some spots on a few of the leaves and some possible chew marks and bigger leaves turning brown on the edges, or would this be normal wear and tear? The stalks and a majority of the leaves look nice and green but just have some problem leaves. I would also like some fertilizing information if possible on the frequency and type. I have done research online but am still very new at this. Thank you for all your help!