If you hear voices, listen carefully. Read the explanation and listen again. Now you try. Check that your speakers are turned on and up. If you don't have speakers, get some.
Different people learn in different ways.
Some people like theory first and others just like to dive in . If you do want to know about the grammar, check out the grammar book. Visit cool-English regularly, check out the new stuff, revise the old stuff and chat with friends. Basically cool-English is just a place to hang out and have fun, that's as simple as it is. I had the idea when I was teaching English in Jakarta.