If you've never been to a gym before or done weights, please, please, please get a personal trainer for a session or two to show your the correct form. I see way too many people at the gym who have shit form but "lift" a lot of weight and it is ineffective and can be dangerous. Form is way more important than weight. Remember, many exercises are designed with a specific muscle to target and if you don't do it properly, you won't get any of the benefits.
You're right, I can't imagine I could get proper form by looking at Youtube videos. There's no substitute for someone telling you where you're going wrong.
