Lots of “gurus” out there are trying to make money off their really bad science. They’ll try to tell you that vinegars are bad because they’re acids (their pH may be on the acid side, but they are often potassium chloride which is alkaline to the body) and other such nonsense that only goes to prove that they never took organic chemistry, biology or chemistry of nutrition, and their papers are not peer-reviewed by other scientists. Don’t listen to them, they’ll drive you crazy and won’t make you feel any better than before, unless of course they encourage you to give up junk foods.
Here is the SANE way to become more alkaline:
avoid refined sugars and use molasses instead;
get 20 minutes of sunlight a day;
meditate;
eat a diet that is made up largely of whole, unprocessed, real foods as Nature gave them to us;
prepare and eat them in such a way that it suits the power of our digestion, for exceeding our power leads to toxic acidosis;
be sure to properly mineralize the body. Calcium is important, as are trace minerals.