Trusts are legal arrangements where a settlor transfers assets to a trustee for the benefit of named beneficiaries, allowing for personalized estate and succession planning. Trusts can include both bankable and non-bankable assets, with the trustee obligated to manage them in the best interests of the beneficiaries. Various types of trusts, such as discretionary and fixed interest trusts, offer flexibility in asset management and distribution according to the settlor's instructions.