If you have a good smartphone with a nice camera or a cam recorder, you can take good videos from it. If you already have your Youtube channel, you can start to create videos that is likely to watch by your audience. Once you recorded your videos, then you need to edit it. Yes, editorial is another key points here to create good videos for your Youtube channel. You can edit it by adding some sounds effects or anything you like that makes your video more appealing. You can use good application directly from your smartphone store. if you are using android, you can use Google play to look for an app that will edit your videos. However, if you are using Iphone, you can search using Apple store. There is also video editor available from your computer, the Media maker. Once you finished editing and you are satisfied or happy with it. then you can upload it to your Youtube. You just need to practice an editorial for good video output.