The best way to get in tune with nature is to go out there and observe. Watch the birds; study trees; look at what is in blossom at different times of the year.
it takes time.
I can't help you with rituals as we probably don't share the same religion. However, on the assumption you're interested in Wiccan-based stuff, there's hundreds of websites out there that include simple rituals and spells. We don't tend to publish that sort of ready-made stuff here, as this is a forum for exchanging views, rather than suppling educations materials on the many pagan paths. however, you may find that some people will give you links to websites they found helpful, if you can explain in a little more detail what path you're interested in.
Magic, in the end, is a matter of finding out what you want to use it for, and what works for you. If you need anything for a specific purpose, you may find others have asked and that there's a thread in the Magic & Ritual sub-forum. I suggest you take a look at a few of those. Good hunting!