Bandits are attackable NPC's that are often used for training. Bandits do not drop anything.
Bandits are quite easy to reach, but you will need to be on normal spellbook. Go to your spellbook (F4) and press "Training Teleports", then select "Bandits".
Make sure you bring many Prayer Potions because everyone, even members lose prayer here and use the "Protect from Melee" prayer to ensure you're safe. Also, if this is your first time visiting Bandits, don't bring any expensive items as it may take a while to load the region (meaning you could be attacked and unable to do anything about it).