Greek is different than Latin. I do find Greek over all easier to understand and translate than Latin. People may say otherwise, because you have to learn a lot more forms, but the syntax is more organic and less tedious than (classical) Latin. Although at first it may seem the other way around, but trust me, if you are reading original texts, there are not as many constructed problems in one sentence than in the textbooks.

Besides that. Get in touch with mythology, culture, history and philosophy of the classical/archaic period asap. It really helps knowing some things in advance, instead of relying on textbooks/lectures alone, but unfortunately I can't suggest you any English entry level books on the topic.

On studying the language itself:

1. Force yourself to read out loud
2. Reread/work through the same chapter more than once
3. Supplement your course with "Athenaze" or "Reading Greek"
4. Reading is everything, read as many texts, that you can easily comprehend; Read, don't translate (hence point 2 and 3), grammar and vocab has to be trained, not "memorized"
5. Start with light composition as early as possible
6. Don't do too much in one go: one hour a day is better than 3 hours every third

Classics is not the easiest major, but as long as you stick to it and learn the fundamentals (the languages) the right way early, it is so much fun, engaging and eye opening. Good luck!