But the best thing to learn is six hexagrams, the most difficult thing to learn is eight characters, and the feng shui is medium.
The information of easy counting of plum blossoms is not as stable as that of six hexagrams, so many people who have studied plum blossoms still use six hexagrams.
Six hexagrams are very easy to use, and everything has been tested. You can directly measure geomantic omen and good or bad luck by six hexagrams, as long as you work hard at home.
Personally, I think it's best to start with six hexagrams, which is easier to get started and the learning period is shorter. No matter which subject you study, it is practical as long as you learn home. Some teachers I know have a high level of eight characters and seldom use six hexagrams. You can see the great events that happen every day with eight characters.