the shapes are exactly the same for any key, the ones stated are in A minor, so if you want to solo in Bm then you slide the whole thing up a step, 2 frets, the root note will be B.

root of the minor pent scale is 5th fret on the E string, root of B is on the 7th fret on the E string, root of C is 8th etc you know all that right??
well here is the minor pentatonic to be getting on with, this example is all in the key of A minor,
http://www.andrewscully.co.uk/lessons/theMinorPentatonicScale.html
good luck, and dont forget you just have to play this to death.

heres what i did, first you take a scale in any key and play it to death, i sit and watch TV and im playing a pentatonic scale over and over and over, when you can play it correctly and follow the story of the film you are watching them you are ready for the next one, one word, repetition,
its the only way, you can look them up in books, analyse them, understand them but then you need to practice them, i started with the minor pentatonic scale, id start in the key of A and learn it on 3 places on the neck, and play it to death, learnng th different keys is easy after you have those shapes burnt in your brain, then i’d move on to Major pentatonic etc etc.