Definitions of guide:

• noun:   someone who shows the way by leading or advising
• noun:   something that offers basic information or instruction
• noun:   someone employed to conduct others
• noun:   a model or standard for making comparisons
• noun:   someone who can find paths through unexplored territory
• verb:   use as a guide

  Example: "They had the lights to guide on"

• verb:   be a guiding force, as with directions or advice
• verb:   guide or pass over something
• verb:   take somebody somewhere
• verb:   direct the course; determine the direction of travelling