Hey man,
The best thing to do is to remove the seeds from the AeroGarden ..... put them into a cup of water and cover the cup so no light can get in (leave them for 12 hours).
Then remove them and get a plate, put the seeds in between a wet piece of paper towel and cover them with another plate .... leave them on top of a computer or tv so the plate stays warm and wait for them to taproot .... normally takes 24 - 48 hrs .... once they have a taproot of 1/4 " them place them into the AG.
I recommend cutting the AG sponge down one side so that it is easier for the taproot to grow ! i did it and it helped a lot !
Let me know how everything goes and check out my grow .... 18 days in right now using an AeroGarden Space Saver 6.