Kefir Help

[allical1284]

I mentioned to a friend my interest in ordering kefir grains and making my own milk kefir, and today she showed up to our BF support group with a cup of kefir that her friend poured from her own stash!
I now have this cup in my fridge and I have no idea what to do with it!!

I know that she just poured from her main batch this morning and that she uses raw goat's milk; from what I understand she just added the new milk to the grains today. How should I store it? Can I start drinking it now? How do I "harvest" some to make new batches and when should I do that? How long is it good for?

I plan to read through old threads this evening and read up on this some more, I just wasn't expecting to start so soon! I am a big time researcher, so being unprepared freaks me out
TIA for any info you can give me! You ladies are so knowledgeable!! I have a lot to learn!!!

ETA: Ok, DD is taking a nap, so I had some time to read up on kefir. The jar is sitting on top of the fridge now, I plan to strain it tomorrow. Now my main question is...if I don't have access to goat's milk, can I add cow's milk to the freshly strained grains tomorrow?

[WuWei]

Yes, add any type of milk to the grains, leave in cupboard for 48 hours, strain and drink. Repeat. (assuming no IgE to milk)

Pat

[allical1284]

Awesome! That is what I thought, but I needed someone to confirm it for me!!
Thanks so much!