There are two kinds of taqleed:
(1) No particular imam is specified. Different imams may be followed in different issues. This is known-as Absolute Taqleed, or General Taqleed.
(2) Only one scholar mujtahid is chosen for taqleed and every complex question is referred to him. This is personal following or taqleed Shakhsi.
There is no more to any of these kinds of taqleed than that a person who is incapable of directly absorbing the commands of Qur’an and sunnah resorts to a mujtahid who he knows is adept in these sciences and relies on his insight and understanding. He then acts on the explanation of this mujtahid. The Qur’an and sunnah assert that this is permissible — nay, obligatory.