What should I do with these four o'clock seeds?

I have picked up some four o'clock seeds on my neighbor's four o'clock 'cause the flowers are so beautiful and I would like to have some. Last, last week I have picked up some and immediately put them on a pot, after four-five days I noticed some seeds are sprouted but those seeds discontinued to grow until i just leave them, and just water if the soil starts to dried up. So my questions are:

What should I do with these seeds before bringing them on the soil?
Where should I put these seeds, on the top of the soil, just few centimeters below from the top or create some holes, insert them and cover a soil?
Should I water them everyday, even if the soil is wet?
Is it true that I should dry them up before planting?

Please help me, I'm 18 and just a newbie in gardening.