The rules of this are easy: there are a few letters that were given by the previous participant, and you have to form a new word with those letters.
Example.
Participant #1: P, r, t, y.
Participant #2: Opportunity. New letters: s, k, r.
Participant #3: Socker.
Etc.
How many letters should be given - preferably 2 or 3, maybe 4. You only need to form one word, it's not necessary to form any more. You can give both vowel and consonant letters.
I'll go first. The letters you should use for a new word are:
L, E, R.