[Si] SIEGRIST K.,
"Virtual Laboratories in Probability and Statistics"
Available online only. Free, high quality, interactive. Read it all, if
you are ambitious enough; otherwise use links to specific topics
(above, under the TOPICS header).
Probably you need the MathPlayer plug-in (if you use Internet Explorer
rather than Mozilla Firefox); details and links on the [Si] site.
[BT] BERTSEKAS D. (Dimitri), TSITSIKLIS J.,
"Introduction to probability" (2002).
A book; our library has 6 copies.