Free up the forestay, shrouds and anything else needed to let the mast be raised.
Keep shrouds attached at both ends. Re-attach them if they're disconnected, but make sure they're free and not entangled with any other part of the boat or boat equipment.
Make sure the mast is untied from all supports.
Put the mast in its "pre-raised" position. Lay it on top of the sailboat, placing the base close to the mast step on the cabin top, and the mast's top end in the aft mass carrier.
Join the mast to the mast foot.
Connect the mainsheet to the bow. Make sure you have enough line to attach the mainsheet to the boom.
Connect the forestay to the boom's high end.
Attach the mainsheet to the forestay's end.
Join the boom to the mast's front.
Double check to ensure you've freed the shrouds.
Make sure that everything is in place then pull to raise the mast.