I have no idea what to do with my cat – she’s just given birth to 4 adorable kittens and I think there are more on the way (although it has been about 45 minutes since the last one).

How old do they have to be before I can feed them solids?
How how do they have to be before I give them their first injection?
And where do I put them (I have two other male, 6 year old cats and I don’t want them to hurt them)????

Please help!!! Thanks