levantar vs levantarse
Levantar is lifting something. Levantarse is getting up yourself. The reflexive marks who is doing the rising.
levantar
To lift, raise or pick up something or someone else.
Levanta la mano si lo sabes.
Raise your hand if you know.
Raising a body part or an object.
No puedo levantar esta caja.
I can't lift this box.
Physical lifting. Compare: cargar = to carry.
Levantó la voz.
She raised her voice.
Figurative use: tone and volume.
levantarse
To get up, stand up, rise from bed or a chair.
Me levanto a las siete.
I get up at seven.
Getting out of bed. Not 'levanto a las siete'.
Levántate, que llegamos tarde.
Get up, we're late.
Reflexive imperative. The 'te' attaches to the verb.
Se levantó de la mesa.
He got up from the table.
Standing up. 'Se levantó' + de + place.
Tricky bit
Dropping the reflexive changes the sentence. 'Levanto a mi hijo a las siete' = I get my son up at seven. 'Me levanto a las siete' = I get up myself.