We sometimes use the general term "lectors" to encompass three different roles in a worship service.
The Lector reads the Lesson
The Epistoler reads the Epistle
The Intercessor leads the Prayers of the People
Serving Schedules list the Lectionary readings for worship services and the persons assigned to read them. You can also find the Revised Common Lectionary readings for any particular week here: http://www.lectionarypage.net/.
The Lector Manual (below) provides instructions and guidelines for readers.
