Let's simplify things
Newsailor,
You have a small lightweight boat. If it were heavy and you were more experienced, by all means sail on the jib. Because you are new, every time the boat heels quickly in a gust you will over-react.
So. First reef the main before you go out. In fact, if you THINK it's a bit windy, always reef before you go out. It is much easier to shake out a reef if it turns out you were wrong, then to put in a reef if it is too windy!
Second, leave the jib furled or off and sail on the main only. One sail is easier to handle than two if inexperienced.
The reason you want to sail on the main is because in a gust you can release the main sheet and spill the wind, keeping you from heeling past your comfort level. If you are sailing on the jib alone and the wind gusts, there is no way to spill the wind, the jib sheet is cleated and out of reach. I came around a point on jib alone and had the wind speed change dramatically and almost drive the bow under!
So, reef the main before going out and spill the wind with the main sheet. As you become more experienced and more comfortable, try other things, but not now.