Working out at home has a high failure rate. I'd say it's worth it. You could just search for a strength program on the r/fitness wiki and follow it. Every Mon/Fri, the sub holds a thread where any kind of question can be asked (think of it as a safe space for noobs), if you have any doubts. Read up on gym etiquette and everything will be fine, the truth is that the gym is a place for self-centered people: they don't really care about you because they're there to improve themselves.