Not sure if you will have a lot of luck with coinbase these days, they have most certainly been busy and it might take awhile to get accepted but you can try.

Here are some basics:

In the beginners & Help section there are some posts that you should read. Bitcoin Wallets - Which, what, Why? How to earn Bitcoins, Newbies read before posting, and Verifying Bitcoin core.  (if you are interested in learning about bitcoin core).

some helpful links:

1. https://howtobuybitcoin.io/
2. https://bitcoin.stackexchange.com/questions/91/how-do-you-obtain-bitcoins