3GPP 24.501 v20.0.0 — the document's own text
10.1 General
Taught in 5. Finding your way around TS 24.501 (CT1 — the group that writes what your phone says, in depth), 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview), 2. What the group produces, and what one of its documents looks like (CT1 — the group that writes what your phone says, quick start).
The description of timers in the following tables should be considered a brief summary. The precise details are found in clauses 4 to 6, which should be considered the definitive descriptions.