Hadley has courses, or UEB online. Get a pop-a-cell braille cell and carry it with you to run through signs when you're waiting at places. There are also apps for iOS and Android that can help with practice. Checking over on r/braille may be a good idea too.

repeated exposure is key, as with reading method. you can put braille into all sorts of things though - not just the obvious books/magazines etc but board and card games, items around the home, gifts and labels etc.

Take an egg carton, however wide you nees, ans place the plastic eggs in them.

Use the eggs to mimic the letters and numbers of the braille alphabet and numerical system.

Run your fingers or hand over the 'bumps', and just repeat.

After youve gotten good at the alphabet, start making sentences or other advanced braille.

Try getting a Braille display and an index card slate with stylus. The Braille display is gonna be what you will mostly read from in my opinion. And the index card slate is good because it's easy to get index cards pretty much anywhere. The other styles of slates are usually too bulky and can be hard to line up properly.

Are you sighted? If you are, there’s a great website called UEB Online, which teaches you to read and write in it. Beyond that, there’s also the Library of Congress Transcription course.

Good luck.

The biggest secret like learning anything else is patience.