I started with Deva, but feel there's tons of other fabulous products out there at this point. This place has the "travel kit" for $30. They used to have $1 shipping. You may want to start small. If you like it, you can get full sizes locally.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic (now Hello Curly Curl Stimulater); Botanical Spirits Jellies, CJ Repair Me, Aloe Fix