I do not know about rosary, but about Mala (prayer beads.)
Start at Guru (head) bead
Keep beads in right hand say mantra, click one bead. Repeat.
All the way around, move left hand counter down.
Keep going. All left hand down, move right hand counter down,move all left back up.
All right hand counters down, move counter over 1 bead (if looking at someone that counter starts at 6:00 and move anticlockwise)
Beads have 108 in number counters are at left right 21 beads and the big counter moves around. Accumulation when all done is 1166400 recitations.
Say opening prayers and aspirations. Start practice. Do prostrations, mandala offering. Start prayers. While praying make auspicous visualizations. Dedicate merit when complete for benefit of all sentient beings. Say long life prayer for His Holiness the Dalai Lama and other Lamas, teachers.
Malas are different for different practice. Malas that are used for a long time are said to be powerful. Many people blow on their malas after practice. Some people get teachers to bless their malas. It is really auspicious to have your root Lama bless your mala. You should always wear it.
That is about it. Hope it helps
Buddha Bless the USA
I made a 108 bead mala for my sister. She is a devotee of the Dalai Lama and is going to teach english in Asia this year. I wish she would come back to the Church but she's happy as a buddhist or a student. I think that she will end up in a monastery at some point. I do know she has very strong feelings about the Dalai Lama, issues about Tibet,etc.