The short answer
Start with six facts: the type of scheme, what you contribute, what your employer contributes, where the money is invested, what charges apply and what happens if you leave. Your annual benefit statement and scheme booklet should help you find them.
“I have a pension” can mean very different things. It may be a defined contribution fund, a defined benefit promise or another arrangement. The name alone does not tell you what it may provide.
Open the statement and find these answers
Ask HR, the scheme administrator or trustees when a document is unclear. If you need a personal recommendation about contribution levels, investment funds or transfers, use an appropriately regulated adviser.