The wallet was created when you created the account and you can view it, e.g. here:
https://blurtwallet.com/@shaani

You received the message because you received 5 blurts to start and you used them to post your first posts, but @nalexadre transferred you more as support ;) So I think it will be enough until the first payment from the post and then there will be slack :)

If you want, you can also buy blurs on the stock exchange and turn them into Blurt power. Everything is described in the wallet.

You will also find more answers to your questions in the FAQ on the right: