You're right about the relaxer damaging and drying out your hair. You'll have to decide if you want to continue to do that.
You'll want to read and learn on nc.com. The "stickies" at the top of each forum have threads that will really help you "navigate" this website. Know what everyone is discussing, acronyms, etc.
If you choose to go natural, you'll want to determine your hair properties. You can do it by following this link: Live Curly Live Free - Home
The e-book would be a great investment for you. No information you couldn't learn here, but it's all in one place. It will tell you what type of ingredients to look for in your products based on your hair properties.
Many of us follow some type of CG (Curly Girl) program. A simplified statement is that you avoid silicone in products and using sulfate in shampoo to remove them. It's really a lot more, but one of the things you'll have to do is read and learn.
If you go natural, once you determine your hair properties, you can look for folks with hair like yours and see what they use (in signatures.) It's the best place to start. Everyone's hair is different, so it's a trial and error process to find out what your hair likes.
For starters, since your hair is damaged, you'll want to do some moisturizing PTs (protein treatments) followed by DTs(deep treatments.) Depending on where you live, it's winter. The dewpoints are low (you'll have to learn about that) and you'll need to give your hair a lot of moisture on a regular basis to prevent it from being dry.
Personally, my hair prefers the products from the online, boutique type companies.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me