You can start your youtube channel just by logging through your gmail account. Find a niche and start producing video content. Select a unique name for your channel. Add a great and authentic description of your channel and its motives. Building an audience is key to increasing your monetization. You need people to watch your ads in order to make any money off of them. There is no one secret to getting more subscribers, just make the best content that you can and they will come to you.