Right now, I am taking photography and video classes in college, but its up to your interests. If you are maybe in middle school or in a lower grade, and you are a gamer, you can start doing Twitch, Mixer, etc. streams. That is what I did, and had a couple thousand subscribers. My ex told me I spent too much time on video games, which made me delete my Twitch account. But with the money I made on Twitch, I used it for college tuition. Lets say you like animals, they have a class for vets. Wanna be a Mechanic? Theres also a class for that. It's really just up to you to look in yourself and see what your good at and if it makes you happy.
The infinitive phrase in this sentence is to speak clearly, and it is used as a subject of the sentence. What/who is essential to being understood? To speak clearly.
