Depending on the bitcoin exchange you use, the rules also varies, but most of them gives you ability to trade up to 100$ w/o ID, however you are also limited by transfer of money options to/from your account. Verification process takes about 2-3 days in most exchanges, then the limit is lifted up to 1000 $ or so.

There are useful videos regarding mining, I am not giving specific link not to advertise, but you can reach them by a quick search and a logic filter of 5 minutes. Hope it helps!