How do I know which path to follow?

I've done quite a bit of research into hinduism and from what I've read and experienced it's the only religion that feels like home to me. But there's a few things I'm having difficulty understanding and unfortunately there are no temples in my state so I can't go to one to ask these questions so I'm really hoping I'll find help here. Firstly, hinduism has many deities and I know that it's widely believed that there's on true Supreme being. But different people have different opinions on which diety is supreme. How can I, as a beginner with no support to ask, find which deity I believe is supreme? I've been reading the Gita, and I feel extremely comforted by krishnas words, but I also feel a strong connection with Lord Ganesha and I want to be able to pray and worship him as well. I'm just a little confused about this. Secondly, I know that eating meat is frowned upon in hinduism, and I've been a vegetarian before so I don't think I'd have any problems going back to it. But I also read you're not supposed to eat garlic or onions, which is where I find difficulty. I've eaten garlic/onion in almost every meal, and it's something I really enjoy. Can I still follow hinduism if I eat garlic/onions?