For small batches, I save those little creamers that you get from Dunkin Donuts or diners and use them to issue out small mixes of epoxy for gluing up things. I no longer even use pumps. I take my RAKA gallons and pour some in old dish detergent or shampoo bottles that I save. For large mixes I use tomato sauce glass jars that I pre mark in a 2 - one ratio on the jar. I shake up the epoxy mix.

Since you're new, the most important thing is to never flop the ratio of one part hardner to two parts resin.